The Naming Of Ships Is A Difficult Matter

pennant number: The Imperial Navy’s best attempt at a general purpose identification code for ships, other means having proven inadequate.

It is generally held that the true identifier of a ship is its name: that is, after all, what is written upon the hull, and with it travels the ship’s crest and other naval heraldry, figurehead, relics, and traditions. More importantly, the name itself travels with the spirit of the ship.

While this is definitive from the perspective of aelvaqor, this is unfortunately inadequate for administrative purposes. Eucharion’s Spear, for example, has in its time been a war galley (w/RG-14¹), two first-rate ships of the line (w/RL1-12 and w/RL1-56), two battleships (w/BB-4 and w/BB-82), a submarine battleship (w/BS-156), two star battleships (BB-6 and BB-183), and three star dreadnoughts (BD-47, BD-200, and BD-486).

A second form of identification is the hull number, assigned to the hull upon construction. Hull numbers consist of an alphanumeric designation for the graving dock in which the hull was constructed, followed by the serial number assigned by the dockmaster to that hull.

This, too, is inadequate for administrative purposes as it relates to the ship entire. Over the course of its life, a single hull may undergo several refits, which may alter many of the ship’s characteristics, even to the point of altering its type. Consider, for example, the case of Damaschira, who began her career as a Simélia-class destroyer (w/DD-1161), was later retyped along with the rest of her class as a destroyer escort (w/DE-2217), and finally was refit as a dedicated minesweeper (w/MS-141).

For this purpose, the pennant number² was devised. Assigned to a given ship (hull) when it is commissioned, along with its name, the pennant number is updated whenever the ship undergoes a significant refit³ and is never reused after the ship is eventually scrapped and passes its spirit and name to an heir, thus providing a unique designation for both the individual ship and its current set of capabilities and characteristics.

The pennant number consists of a type prefix (also known as the flag superior), identifying the type of the vessel, followed by a numerical suffix (the flag inferior), indicating the order in which the ship in question was commissioned as that type. A ship which is refit into a new type and then back into its original type acquires a new pennant number, unless the second refit is merely to restore its original class.

Small craft are not issued names or pennant numbers, and instead – for administrative purposes – use the pennant number of their mother ship with a numerical suffix indicating order of assignment. For communications, a flight number is used instead.

Blackjacket’s Dictionary


Footnotes:

  1. Historically, not all ships were assigned pennant numbers at the time of commission. Type codes beginning with “R” indicate pennant numbers assigned retrospectively to ships of types which no longer exist. Similarly, both the wet navy and space navy use similar pennant number systems; where both are used in the same context, it is conventional to prefix wet navy pennant numbers with “w/”.
  2. Originally flown by wet navy ships by means of signal flags, hence the name and the names of its components. In later years, and by space navy ships, the pennant number is signaled by the ship’s transponder and used in tactical mesh packet headers.
  3. The definition of significant refit is somewhat ambiguous, but is traditionally held to include any refit sufficient to change the type, or even class, of the ship in question.

Below The Thunders Of The Upper Deep

Kaiju¹-class submarine battleship

Builders:

  • Ethring Iron and Steam Works
  • Sukórya Graving & Drydocks
  • Telírvess Naval Yards
  • Captal Daëntry Naval District
  • Ambríël Electric Boat Manufactory

Displacement: 72,830 long tons (standard)

Length: 312 m
Beam: 24 m
Draft: 14 m

Propulsion:

  • 2 x Empire Nucleonics, ICC “Fluoride Chowder” high-temperature circulating molten salt reactor, driving
  • 4 x Blackstone Industries, ICC Brayton-cycle gas turbogenerators, powering
  • 4 x Ambríël Electric Boat Manufactory, ICC magnetohydrodynamic impulsors
  • Bow and stern magnetohydrodynamic maneuvering thrusters
  • Bow and stern navigational X-planes

Speed: 36 knots
Range: Unlimited (6 year refueling interval)

Maximum Depth: 1,000 m

Complement: 232 officers and men (including small craft and flag)

Sensors:

  • Hydrodyne Group Mk. 58/1 passive area-awareness conformal sonar
  • Hydrodyne Group Mk. 58/3 active seeking sonar
  • GenTech Alaercíma Prickleback Mk. 4 lateral-line electrodynamic sensor stripes
  • 8 x GenTech Alaercíma Minnow-class reconnaissance/maintenance UUVs
  • Artifice Armaments, ICC CSR-62 combined search radar
  • Imperial Navy Mk. 55 gun director with combined fire control radar
  • Scorched Earth Infosystems Variant 92 electronic warfare suite
  • Optronic periscope incorporating laser satcom and local-area radio
  • GenTech Alaercíma Intersub Communications System (milspec)
  • 4 x low-profile deployment buoy,
    for 12 x Clockwork Souls, ICC NL-R132 Overseer reconnaissance drones

Armament (Primary):

  • 360 x VLS cells for Artifice Armaments, ICC MS-96 Naginata long-range multipurpose missiles
    (4×72 and 2×36 strips of cells)
  • 9 x torpedo tube for Artifice Armaments Mk. 62 Blowfish heavy supercavitating torpedoes
    (6 forward tubes, 3 stern tubes)

Armament (Secondary):

  • 3 x 384mm superheavy mass driver in single triple turret (usable only when surfaced)
  • 8 x Artifice Armaments, ICC Peacebringer rapid-firing point-defense laser (usable only when surfaced)
  • Eye-in-the-Flame Arms, ICC Wub-Wub sonic implosion system, 6 transducers
    (replaces 6 x Artifice Armaments, ICC supercavitating anti-torpedo microtorpedo launchers used on first four boats)
  • 4 x Steelfist Armored Security and Escorts, ICC Thresher-class squidfighters
  • 4 x sonar decoy launchers

Armor:

  • 4″ spinmetal-composite layered outer hull
  • Cosmic Defensive Technologies, ICC internal kinetic barrier hull reinforcement system
  • Multilayered torpedo defense system placing subdivided tanks and batteries behind outer hull
  • Biomimetic internal shock-absorption framework
  • Anechoic tiling

Other:

  • 4 x Serannis Escape Systems, ICC Su60/200 60-man escape capsules
  • 2 x GenTech Alaercíma Pike-class militarized transport minisub
  • Flexible payload/diver deployment module

The design of the Kaiju-class (and indeed the submarine battleship concept overall) was a product of a convergence in designs following the Fifth Oceanic Dominance. It did not escape maritime architects of the era that designs for the first post-Fifth generation of surface battleships had adopted a missile-dominant loadout and a flattened profile which brought them increasingly close to the guided-missile submarine in overall design. An experimental design project, designated RAGING DOLPHIN, was initiated to consider merging the next generation’s BB(X) and SSS(X) designs into the type that would become the BS(X). The Kaiju-class submarine battleship represents the first evolution from that prototype.

As large as any surface battleship, the Kaiju-class hull follows the general flattened ovoid shape common to large submarines. As is the usual case in submarines of its era, the Kaiju lacks a sail, but does have a slight turtleback at the bow, making it resemble a whale in overall shape. This hump houses the scanning periscope, communications and radar masts, for’ard entry hatch and navigation bridge, and at its foremost extent, the retractable fairing concealing the Kaiju‘s single mass driver turret. Its aftward extent houses two of the four emergency escape capsules.

Unlike smaller submarines with a single pressure hull occupying the centerline of the fairwater hull, the Kaiju has six connected pressure hulls. The two largest run down the midline of the submarine, the smaller crew facilities hull (since it is flanked on either side by the forward VLS cells, 2 x 36) stacked directly above the larger, triple-decked, auxiliary machinery/storage hull, which continues both aft (below the aft VLS cells, 4×72) and forward beyond the former to the for’ard torpedo room. Directly behind the for’ard torpedo room, the auxiliary machinery hull encompasses a flexible payload/diver deployment module, whose lower section can be pressurized to make use of a moon pool behind a retractable flush cover. Four of the eight reconnaissance UUVs are stored here.

At the aft extent of the crew facilities hull are the other two emergency escape capsules, immediately preceding twin hatches for the deployment of the drone buoys and a cargo loading hatch giving direct access from the deck to the storage space located in the auxiliary machinery hull.

Above the auxiliary machinery hull at the bow, beneath the turtleback, is the command center hull, containing the Kaiju’s control room, flag bridge, and computer center.

At the stern, a fourth pressure hull serves as the hangar, containing berthing for the minisubs, the squidfighters, and the remaining four recon UUVs, along with the aft torpedo room below, while slightly forward of this are the dedicated port and starboard drive hulls, each containing one of the boat’s reactors, the associated turbogenerators, and machinery associated with the magnetohydrodynamic impulsors, along with (duplicated) maneuvering rooms, either of which can control all power and propulsion-related systems. Both the hangar and the drive hulls share a common access to the aft entry hatch.

Boats of the Kaiju-class are named after legendary sea monsters.


Footnotes:

  1. Best-fit translation.

And A Desert Topping

Laurë Isilvieré-class battlecarrier

Builders:

  • Ethring Iron and Steam Works
  • Sukórya Graving & Drydocks
  • Telírvess Naval Yards

Displacement: 61,620 long tons (standard)

Length: 268m (waterline); 276m (overall)
Beam: 36m
Draft: 12.2m

Propulsion:

  • 4 x Empire Nucleonics, ICC “Neutron Storm” nucleonic boilers (PWR), driving
  • 4 x 2 Blackstone Industries, ICC high-low pressure turbogenerators, powering
  • 4 shafts x 2 Hammerforge Tool Company, ICC heavy-duty electric drive motors

Speed: 36 knots
Range: Unlimited (6 year refueling interval)

Complement: 1,768 officers and men (including air wing and flag)

Sensors:

  • Artifice Armaments, ICC, ASR-40/2a air search radar
  • Artifice Armaments, ICC, SSR-45 surface search radar
  • Hydrodyne Group Mk. 38/1 passive area-awareness sonar
  • Imperial Navy Mk. 45 Gun Director with 4 x fire control radar
  • Scorched Earth Infosystems Variant 32 (Block II) electronic warfare suite
  • Shimana Aerospace flight control and navigation system

Armament (Primary):

  • 6 x 384mm superheavy mass driver, in two triple turrets
    (A & B both forward of primary superstructure; B superfiring from deck 01)
  • 96 x VLS cells for Artifice Armaments, ICC MG-60 Sarissa long-range missiles
    (1 x 72 and 1 x 24 blocks of cells; supports multiple types; land-attack and/or AShM)

Armament (Secondary):

  • 8 x 96mm Imperial Navy Type Nine dual-purpose heavy mass driver, in four twin turrets
    (surrounding the primary superstructure)
  • 6 x Artifice Armaments, ICC Deathray rapid-firing point defense laser
  • 16 x dedicated launchers for Artifice Armaments, ICC MG-34 Spar medium-range AShM
    (arranged 4 x 4)
  • 16 x dedicated launchers for Artifice Armaments, ICC MA-98 Hawkeye medium-range SAM
    (arranged 4 x 4)

Aircraft:

  • “V” dual flight deck aft, single elevator, 2 x electromagnetic catapults
  • 12 x N5-5I Ripper multirole V/STOL attack aircraft
  • 12 x Clockwork Souls, ICC NL-I40 Purity interceptor drones
  • 12 x Clockwork Souls, ICC NL-R36 Spyglass reconnaissance drones

Armor:

  • Belt: 12″ spinmetal
  • Decks: 8″ spinmetal over machinery and magazines
  • Turrets: 9″-18″ spinmetal
  • Conning tower: 12″ spinmetal
  • Secondary systems: 8″ heavy steel plate
  • Elsewhere: 0.5″ heavy steel plate

The Laurë Isilvieré-class battlecarrier was a product of the post-Fourth Oceanic Dominance environment. While the Fourth had proven the supremacy of the BB/CV hybrid battle group over the battleship-centric doctrine of the Second and Third, the post-Dominance environment left the Admiralty confronting a single inescapable fact.

The hybrid battle group, while unparalleled in its strength and flexibility, was also unparalleled in its expense, both to construct and to operate. This was a matter of considerable concern, since the Admiralty was now required to exercise command over a considerably greater area of ocean than had previously been the case, and the events of the Third Dominance had demonstrated the vulnerability of a fleet in being.

While battlecarrier designs had generally been dismissed as inefficient (critics noting quite correctly that a direct medium-range combatant such as a battleship had mission requirements quite contrary to that of a indirect long-range combatant such as an aircraft carrier), studies suggested that combining the functions of the primary vessels of the hybrid battle group, along with a reduced number of escorts, could create a low-intensity battle group suitable for exercising sea control in secondary theaters, enabling the full hybrid battle groups to be reserved for more demanding missions. In this role, their inefficiency would be compensated for by their economy.

Thus the Laurë Isilvieré-class battlecarrier came to be, combining the forward turrets and missile loadout of the Invictus-class battleships with an aft-mounted flight deck and hangar based on those of an escort carrier. Operating in low-intensity battlegroups accompanied by a limited number of escorts (typically a single cruiser, a pair of destroyers, and a pair of attack submarines), they and their successors kept the Imperial Star flying over Eliéra’s oceans until the end of the Consolidation.

Ships of the Laurë Isilivieré-class are named after Imperial Hands, befitting their nature as agents competent in multiple roles.


(Notes for those paying attention:

This is about two generations removed from the Ulricik Bancrach-class destroyer and a little ahead of our state of the art, hence the coilguns and the laser CIWS. Various aspects of its design were inspired by the proposal for the Phase II refit for the Iowa-class battleships, which can give you a general idea of what a Laurë Isilivieré-class might look like – except that, being nuclear, they have no stacks. Also, they wear dazzle camo, because dazzle camo is cool.)

Lunch Is On Me

Séralámíya-class littoral restaurant ship

Builders:

(original) Ethring Iron and Steam Works
(refit) Captal Daëntry Naval District

Displacement: 41,000 long tons

Length: 272 m
Beam: 34 m
Draft: 6.18 m (full load)

Propulsion:

  • 8 x Empire Nucleonics, ICC “Kirchev’s Cauldron” nucleonic boilers, driving
  • 8 x Blackstone Industries, ICC turbogenerators
  • 4×4 Hammerforge Tool Company, ICC heavy shaft drive motors

Speed: 32 knots
Range: Unlimited (6 year refueling interval)

Complement: 2,800 (including chefs and longshoremen)

Armament (Secondary):

  • 4 x 6″ Imperial Navy Type Three dual-purpose gun; single turrets
  • 12 x twin 24 mm Black Sky anti-air defense guns

Armor:

  • Belt: 6″ heavy steel plate
  • Deck: 3″ heavy steel plate

A product of the late Third Oceanic Dominance, the Séralámíya-class littoral restaurant ship – or rather, the unique example of such – was a product of the conditions of the island-hopping eastern theater, in which the Imperial Military Service found itself liberating or accepting the surrender of a number of island polities whose infrastructure had been depleted by war to the point at which starvation was setting in, necessitating relief efforts trailing only a short distance behind the front proper.

Modified from one of the then-aging Affíëtelír-class flush-deck carriers (then in the process of being replaced by the new Stormfall-class island-superstructure carriers), Séralámíya maintained the fundamental structure of the Affíëtelír, but replaces its aviation facilities. While the aft end of the flight deck was retained as such to support a small number of light cargo tiltrotors (carried on deck), the forward flight deck was converted into an open area (which could be rigged with a canvas cover in inclement weather), designed to be readily secured from the rest of the ship and with protected access routes from reserved gangways to shore. This was intended to serve as a safe dining area for civilians when suitable areas ashore were unavailable.

Meanwhile, to serve both this and back up shore facilities, the forward end of the main (upper) hangar deck was converted into extensive kitchens and other food preparation areas, while the majority of this deck was given over to food storage including a large refrigerated section. The secondary (lower) hangar deck, including its workshops and aviation fuel tanks, were converted into more food storage, but in their case with the addition of large cargo doors on each side of the ship at bow and stern. At the bow, these doors were intended to permit rapid “roll-off” deployment of self-propelled field kitchens to serve areas remote from the coast, and delivery of stored food to them using carried vehicles; at the stern, to permit the ship’s stores to be replenished from colliers without interrupting other operations.

While a rapidly constructed and in many ways clumsy compromise design, Séralámiya served throughout the later stages of the war and undoubtedly prevented many civilian death due to hunger. Following the Third Ocean Dominance, Séralámíya herself was decommissioned, ultimately to be replaced by a specialized class of littoral restaurant ships (the Galramíya-class, designed as a joint project with the Emergency Management Authority for disaster relief) based on the lessons learned from her design, of which the second carried forward her name.

Eight Hells (2/4?)

This is Task Force Fourteen, as it steams at a leisurely twenty-two knots steadily east along the rocky southern shore of Míhayll Island, the southernmost in its archipelago. It had passed the entrance to the Míhayll Shallows yesterday at dusk, the shoal offering a back door to Lothell Bay for those with sufficiently shallow drafts, but not even a destroyer would attempt that passage. TF14 had sighted a few fishermen among the shoals, but if they had been sighted in return – a virtual certainty – it would not matter. Their targets had no option but to break out of the bay, which short of charging directly into the teeth of TG Northern, meant transiting the Adessír Straits; if the fishermen reported their passage to the Alliance command, it would make little difference.

The interception, if it happened – the course and speed of TF14 had been selected to intercept the Alliance ships at the mouth of the Straits, if they were indeed attempting a dawn transit – would be a close-quarters knife-fight. The sharp mountain spine running down Míhayll’s length was an effective barrier to both gunfire and radar, and so they would not know of its success until they were almost upon the enemy.

Meanwhile, the wind blew steadily against them, as it had all night. Vicious gusts out of the north-west carried storm clouds down out of Lothell, bringing with them lines of squalls, flat and heavy rain, and a steady swell that was imparting to the ships of TF14 a miserable corkscrewing motion. The only virtue to be found in the weather – and the worse storms further north – was that it would keep Alliance air cover grounded, and make it virtually impossible for Antinomos to fly off or recover aircraft. Or such was the Admiralty’s contention, although the empty skies above them were some confirmation.

The fast battleship Skybreaker, Vice-Admiral Ardelli’s flagship, trails the midpoint of the center line of the formation, following the wake of Invincible, her elder sister, their silhouettes obscured against the storm by the entangling shapes of their dazzle paintwork. Fast battleship is an unconventional designation for the Imperial Navy, but one earned by their unusual construction; rather than heavy naval steel, their citadel armor was wrought from spinmetal, a composite material harvested from deposits left behind by feral silverlife. Absurdly light and strong – albeit in short supply, uncastable, and extremely difficult to work – the spinmetal citadels of the Invincible-class battleships left them vulnerable to only the heaviest fire, while allowing them to outrun most cruisers with ease.

(A framed letter, presented to the ship by the naval architect behind the project, hung in the captain’s day cabin of Invincible; a purloined copy of a reprimand addressed to a junior Alliance intelligence analyst informing them in no uncertain terms that no-one, not even an Empire recently come into possession of the deposits of the Ossirvel Distributary, would expend the wealth necessary to use such a rare and costly material as warship armor.)

Ahead and behind them as they proceeded in line ahead, their escorting cruisers Seabreeze and Waterspout; refits of the older Tempest-class, now fat with air defenses, but still mounting a respectable main armament of a half-dozen 6″ guns.

And around them, the destroyers. Eight of them, all of the Ulricik Bancrach-class, the Hungry Wolves: Gray. Grinning. Pouncing. Leaping. Ravening. Swift. Unseen. Grizzled.

Almost hidden as they crashed through the swell, water sloshing over their bows – while relatively new, the wetness of the class in heavy weather was well-known – the destroyers flanked the main line four and four to port and starboard, the first pair preceding the others and the last trailing. Most visible was Ravening Wolf, on Skybreaker‘s port bow, flying the white pennant of Commodore Chiomé, commander of the destroyer screen.

The voice of a loudspeaker making a long-expected call cut through the quiet of Skybreaker‘s bridge.

“Radar-bridge. Radar-bridge. Contacts, repeat contacts, appearing through ground clutter, bearing oh-eight-four.”

“Signal to all ships: clear for action. Hoist the battle ensign.”

Eight Hells (1/4?)

Vice-Admiral Ardelli, TDMS Skybreaker, commanding TF 14. Battleship CAS Antithemis, carrier CAS Antinomos, escorting destroyers, reported moving out Lothell Bay steaming ESE. Suspect attempting transit Adessír Straits tomorrow at local dawn. Heavy weather over Lothell Is. makes it unlikely fly off air cover. All measures intercept and destroy. 1SL, Calmiríë.

Girls In Red Cloaks Beware

(In which I noodle around with wet navy designs from the closest to a WWII-equivalent period in ‘verse history.)

Ulricik Bancrach (“Hungry Wolf”)-class destroyer

Builders:

  • Ambriel Dock Guild & Company
  • Consolidated Selenarian Shipbuilding
  • Ethring Iron and Steam Works
  • Ryudailai Pier Shipbuilding Cooperatives
  • Telírvess Naval Yards
  • Tortelsvard Naval Arsenal

Displacement: 3,670 long tons (standard)

Length: 127.48 m
Beam: 12.32 m
Draft: 5.65 m

Propulsion:

  • 4 x Empire Nucleonics, ICC “Kirchev’s Kettle” nucleonic boilers, driving
    2×2 Blackstone Industries, ICC geared steam turbines (and auxiliary turbogenerator)

Speed: 44 knots
Range: Unlimited (6 year refueling interval)

Complement: 285 officers and men

Sensors:

  • Artifice Armaments, ICC, ASR-6/1 air search radar
  • Artifice Armaments, ICC, SSR-12 surface search radar
  • Hydrodyne Group Mk. 0/2 experimental hydrophones

Armament (Primary):

  • 6 x 6″ Imperial Navy Type Four dual-purpose gun;
    two single turrets (immediately forward of primary superstructure (A);
    immediately aft of secondary superstructure (Y));
    two twin turrets (fore (B) and aft (X) of primary superstructure, deck 01)
  • 18 x 18″ torpedo tubes in three stacked-hex turret mounts
    (bow, forward of A turret;
    in between primary and secondary superstructure;
    stern, aft of Y turret, elevated above depth-charge racks),
    firing 18″ low-signature LS/85 unguided torpedo with 292 kg high explosive warhead
  • 2 x 108 kg depth charge delivery racks (stern)

Armament (Secondary):

  • 3 x quad 36 mm Black Sky anti-air defense guns
    (one forward on primary superstructure, deck 02;
    two aft on secondary superstructure, deck 01, either side of mast/secondary director)
  • 12 x twin 24 mm Black Sky anti-air defense guns
    (two on bridge wings, deck 03;
    two forward on secondary superstructure, deck 01;
    remaining eight on main deck, four per side as space permits)

Armor:

  • Engineering space (engines and boilers): 0.75″ heavy steel plate
  • Pilothouse: 0.5″ heavy steel plate
  • Gun directors: 0.5″ heavy steel plate
  • Torpedo tube covers: 0.25″ heavy steel plate
  • Elsewhere: None

Designed during the middle years of the Third Oceanic Dominance, the Ulricik Bancrach-class destroyer was the second and most common¹ of the “modern” types of destroyer that would dominate the last great era of wet naval combat, specifically designed for the multiple roles of serving as protective screening forces for battleships and carriers (especially against air attack), of mounting deadly “wolf-pack” torpedo attacks against enemy forces during surface actions, and of addressing the then novel threat of the militarily effective submarine.

(A later ASW variant and refit of the class, as the need became more apparent, would replace the midships torpedo tubes with a pair of depth charge projectors.)

The name of the class comes ultimately from their flush deck construction² (that would later become near-ubiquitous in later designs around the time of the War of the Twelve Tyrants), eliminating all well decks³, reducing the overall height of the superstructure (divided into two, the swept-back forward superstructure accommodating the bridge tower and primary gun director, and a lower, one-deck secondary superstructure to aft surrounding the base of the tripod mast, carrying the radar and wireless antennae and the secondary gun director), and even eliminating the forecastle, which along with her slender dagger profile gave Ulricik Bancrach and her successors a particularly lean, prowling, hungry look relative to their contemporaries. The substantial increase in firepower over the preceding Sar Anpeng-class only added to this reputation.

The removal of the forecastle – although the flared bow was retained – combined with the weight of the forward armament – proved to detract unfortunately from the class’s seaworthiness in heavier weather. While at the time this was considered an acceptable compromise, with then-dominant doctrine calling for heavy salvoes of unguided torpedoes from destroyers squadrons, the advent of the guided torpedo tipped the balance back in favor of quality, and the Ulricik Bancrach-class ships in Imperial service were refitted to remove the forward torpedo mount in exchange for better seakeeping.

Serving through the remainder of the Third Oceanic Dominance and the War of the Twelve Tyrants, and with refits, upgrades, and successor classes based on their design continuing to fill out the squadrons of the IN into and through the Consolidation, the Ulricik Bancrach-class is perhaps the most iconic of all the destroyer classes commissioned by the Empire.


  1. 224 Ulricik Bancrach-class destroyers were commissioned, of which 148 served on the Upperside and 76 on the Underside.
  2. It should be borne in mind that, using nucleonic propulsion as they tended to, Imperial steamship designs near-universally lacked smokestacks.
  3. Meaning here the older usage of decks lower than those fore and aft of them (e.g., between a forecastle and full-width superstructure, or between such a superstructure and a poop deck).

Amphisbaena

Amphisbaena-class battleship

“Half ahe… that way.”

– Capt. Olavi Corel, first captain of Amphisbaena

Displacement: 125,000 long tons

Length: 330 m (at waterline: 316 m)
Beam: 84 m (at waterline: 48 m)
Draft: 12.1 m

Propulsion:

4 x Empire Nucleonics, ICC 64 MW “Fat Salamander” fission reactors
8 x Blackstone Industries, ICC steam turbines and reduction plant
In-house magnetohydrodynamic “inchworm” drive system

Speed: 42 knots (non-sustainable emergency power: 48 knots)
Range: Unlimited; 12 year refueling interval

Complement:

1,672 officers and men
Thinking Machines, ICC “Admiral Aliniv” Command Optimization Thinker

Sensors:

Artifice Armaments, ICC, ASR-24/3 air search radar
Artifice Armaments, ICC, SSR-36 surface search radar
Artifice Shadow Works X-449 imaging lidar
Hydrodyne Technologies, ICC, “Long Ear” sonar suite
Tactical interweave uplink

Armament (Primary):

6 x Artifice Armaments, ICC 22″ “Big Howlin’ Bitch” railgun
6 x triple Artifice Armaments, ICC, 16″ “Little Sister” railgun

Armament (Secondary):

24 x Artifice Armaments, ICC 9″ “Poniard” conventional gun
36 x Firefly Aerospace, ICC “Waterline” anti-ship seeking missile
36 x Firefly Aerospace, ICC “Gentle Touch” target-finding missile
8 x Eye-in-the-Flame Arms, ICC “Pesticide” automated threat protection system

Armor:

Citadel: 24″ layered C-allotrope/alloy composite; equiv. 53″ steel
Main turrets: 18″ layered C-allotrope/alloy composite; equiv. 39″ steel
Elsewhere: 12″ layered C-allotrope/alloy composite; equiv. 26″ steel

Aircraft carried:

16 x Stonesmight Automata, ICC “Tattletale” scout drones
16 x Stonesmight Automata, ICC “Fleshharrower” attack drones

The four Amphisbaena-class battleships were the last fast battleships laid down by the Imperial Navy (note: the “wet” navy of the era, not its space successor), and participated in a number of military actions including the last battles of the Consolidation to take place on Eliéra proper. They are widely considered to represent the pinnacle of the naval architect’s art, and the furthest development of the “wet” battleship as a class.

The design of the Amphisbaena-class, in keeping with the mandate the IN inherited from the Alatian Navy’s Weapons Development Board, was to produce a vessel that would utterly outclass any opponent against which it was set. Thus, the class carries six 22″ railguns – of a model designed to be scaled down for naval use, rather than used as is – in addition to its six triple 16″ railgun turrets and conventional armaments. This same approach led to the inclusion of the eight “Pesticide” automated threat protection systems, capable, once activated, of automatically reducing anything not tagged as friendly approaching within a mile of Amphisbaena, above or below the water, into chaff and charnel.

The final development of this approach was Amphisbaena‘s magnetohydrodynamic “inchworm” drive. While the primary characteristic of this type of drive is its quietness, and thus lower sonar profile, in the case of Amphisbaena, it was selected because its lack of the issues associated with high-performance propellers, coupled with an otherwise oversized power plant, enables Amphisbaena to reach the otherwise unprecedented – for a ship of its displacement – cruising speed of 42 knots.

It also has the advantage of functioning equally well in either direction, and this – combined with the ability to divert water to side outlets at both bow and stern – gave Amphisbaena unparalleled abilities not only to change heading 180° without turning at all, but also to decelerate, to turn in its own length, and to keep station – making it an incredibly stable gun platform.

It is also to this drive that Amphisbaena owes its entirely symmetrical hull profile and superstructure, since the designers felt no need to inflict the notion of a preferred direction on a ship which otherwise would have lacked one. Despite the quotation above, officers and men serving on Amphisbaena-class ships rarely had difficulty telling the bow of the moment from the stern when the ship was under way, but it is nonetheless true that a red-blue color gradient was added to the bridge paintwork after Amphisbaena‘s sea trials to make end from end clear when moored or hove to.

Worldbuilding: Sail Plans

Taking a brief moment to hand out a random factlet, let us turn from space navy to wet navy. Old school wet navy.

Did you know that the most widely used rig back in the days of sail, especially by the Alatian fleet, the largest both mercantile and military and which went on to form the core of the Imperial fleet, was a variation on what on Earth is called the junk rig?

(Well, no, you didn’t, because I’ve only just told you. It was a rhetorical question.)

Using bamboo battens and silk sailcloth, even, for a very Eastern flavor for the Earth reader.

The chief experimenters with alternate rigs and modifications to the standard junk rig were the actual Alatian Navy, principally because the major flaw in the junk rig is its difficulty in sailing close-hauled (i.e., close to into the wind), but in contrast, it’s exceedingly efficient at sailing with the wind, and requires – always a consideration – a rather smaller crew to manage it than a typical western rig.

With careful attention to hull design, too, the eventual junk-rigged clippers and windjammers of the Alatian merchant fleet ruled the ocean trade up to, and even into, the steam era: as their sailors would cheerfully point out, the trade winds were very reliable, and given that, that a good rig could deliver as much or more power than steam could, and also that it didn’t require all that fuel taking up space that could contain earning cargo kept the sailships in business, and in many cases those which carried steam engines used them as an auxiliary power source only, for when the wind failed.

(Why this digression into nautical history? I have no idea. But I found it an interesting piece of the universe, and so I wrote it down.)

Trope-a-Day: Standard Sci-Fi Army

Okay, let’s try this again, with much more saving of drafts…

Standard Sci-Fi Army, eh? Well, not sure how much I have to say about that that’s new, because of all the things I’ve already written about the Imperial Legions elsewhere, but let’s see what I do have.

(Actually, first I’m going to register an objection to the trope write-up up front and say that, in actuality a disturbing amount of science fiction, especially the visual kind, does not follow this army standard, because this army standard implies a balanced combined arms approach.

Compare that to, say, Star Trek, whose approach to ground combat involves landing a bunch of starship crewmen with sidearms to play the part of cannon fodder extremely light infantry, or Starship Troopers – the movie, not the book – in which they have actual light infantry but the only military maneuvers they appear to have mastered are the “broken-formation rabble charge”, the “rout” and the “circular firing squad”.

When Star Wars is the best I can think of at depicting realistic army-type military operations on screen, it should be clear that visual SF has a long way to go.)

The Imperial Legions, contrariwise, do follow a balanced combined-arms approach. Leaving aside those things specifically mentioned below, the only huge omissions from their portfolio are artillery units and an air force, both of which are supplied by the Imperial Navy: the former in the form of orbital bombardments by KEWs, and the latter in the form of atmosphere-capable AKVs sortieing from aerospace cruisers in low planetary orbit.

(They are comfortable with this, by and large, because landing a military force planetside when you don’t have orbital superiority is merely an expensive way to get lots of people killed.)

The main body of the Legions contains both infantry and cavalry: light infantry (really regular line mechanized infantry who come with IFVs which they leave behind when it’s time to play light/scout infantry) and heavy infantry (the big guys in the powered armor that lets them punch out buildings); and light cavalry (skimmer-riding “dragoons” and “hussars” who can fight both mounted and dismounted, fast-moving scouts, skirmishers, and raiders) and heavy cavalry (main battle tanks and modular swapout units of similar weight, which cover a lot of specialized territory – see article).  All of these, naturally, come accompanied by plentiful drone support and at least one attached wing of organic close air support.

(The organic close-air support is provided by the G7-BU Sunhawk (imagine the IN SPACE version of the A-10 “Warthog” Thunderbolt II reconceptualized as a tilt-turbine/hybrid rocket) and its smaller cousin the G12-BU Falcon, which can fly like a plane, float like a helicopter, and sting like the giant mass driver that the whole damn airframe is wrapped around.)

A substantial proportion of each of these types are trained as stormtroopers, which is to say, to make orbital drop assaults – and so named because they arrive with the speed of lightning and the sound of thunder, and wreck the crap out of anything that isn’t under deep cover. Yes, even the heavy cavalry. (Hello, Flapjack!)

(Further side note: and where that Super Soldier trope is concerned – hey, this is the Empire. Everyone who passes the first half of the Anvil receives the finest milspec augmentations that the budget will pay for. Quantity may have a quality all its own, but the IL prefer the quality of quality, any day.)

Everyone, including specialized legions, is one of these types first. That’s the legionary way. First you’re a legionary, then you’re something else.

Now, where these specializations are concerned, headquarters and logistics functions are usually provided by other bits of the IMS, (Theater/Battlespace Command and the Stratarchy of Military Support and Logistics, respectively), but various specialized legions built off the same basic platform provide combat engineers, intelligence, guards, field medical services, communications specialists, MPs, siege specialists, sappers, peacekeepers, snipers, saboteurs, recon specialists, special forces, Very Special forces, battle theater preparation specialists, underwater specialists, underoil specialists, subterranean specialists, hunter legions, terror legions, scouts, applied eschatologists, and pretty much any other class of military specialists millennia of experience has come up with.

Not seen: mecha. Because survivability no, and when your AKVs and drones can fly and your skimmers can hover and even your MBTs can at least hop, putting legs on things is really kinda pointless.

Finally, there’s also the wet navy. Technically, the wet navy isn’t part of the Legions, it’s part of the Stratarchy of Military Unification, but it’s the IL that call upon it when they need to deal with water worlds (or oil worlds, etc.), so it’s covered under this trope.

(Note: the rest of this is subject to change as I haven’t done a sophisticated work-up on wet-naval strategy yet.)

It’s rather more limited than it used to be, certainly in terms of that part of it that goes abroad and thus has to be delivered by dropship. That, and the age of the aircraft carrier is long since over, because when the battlespace is full of missiles and orbital weapons, it suffers from the same large, fat target problems as other giant types…

…so a modern wet navy task group tends to consist of three types, in varying proportions:

“Cruisers”, as the “capital ships”, which concentrate on mini-AKV and missile armament and a command-ship role. (Major air offenses being better launched from near orbit.)

“Destroyers”, fast and nimble attack vessels, and indeed that means they’re usually hydrofoils or ekranoplans with mass drivers. The aircraft of the sea.

And submarines, continuing their traditional role of being holes in the water that no-one notices until the no-one in question explodes suddenly for no readily apparent reason.