So, I got a request from a reader for a few specs on the Hariven-class free trader. Well, why not?
(Sadly, they were imagining something like Vaughan Ling’s Planetes-inspired debris collector with comparable dimensions, capacity, etc. Sorry to say it, but that ship? Had some style. The Hariven? Really doesn’t.)
HARIVEN-CLASS FREE TRADER
Operated by: Desperate free traders, just starting-out bands on tour, your sketchy brother, refugees, space hobos, and anyone else who can’t afford a better ship.
Type: Basic freighter.
Construction: Under open-source license; produced by multiple manufacturers, most of whom would prefer not to admit it, along with various backyard fab shops.
(And when I say “desperate free trader”, I don’t mean, say, the people who fly around in a Firefly-class in Firefly. Those people, in this verse, own something like a Kalantha-class. This is down from there at the true ass end of space travel.)
Length: 46m, of which 30m is the hold.
Beam: 8m (not including radiators)
Gravity-well capable: No.
Personnel: 3, as follows:
(This assumes you’re following the typical regulations which require – since the Hariven has no AI, and only dumb automation – that at least one qualified person be on watch at all times, hence a minimum of three. In practice, a Hariven can be flown by one and very often is, if they don’t mind violating the rules of navigation of every halfway sane polity in space.)
Drive (typical; may vary from build to build): Nucleodyne Thrust Applications “Putt-Putt” fusion pulse drive.
Propellant: Deuterium pellets.
Cruising (sustainable) thrust: 0.6 standard gravities (0.56 g)
Peak (unsustainable) thrust: 1.2 standard gravities (1.12 g)
Delta-v reserve: (Not yet calculated, but limited; if you’re flying a Hariven, you ain’t going brachy unless you devote a lot of your hold space to extra tanks. Be prepared to spend much of your voyage time on the float.)
Maximum velocity: 0.02 c (based on particle shielding)
Not supplied as standard, but buy some. You’re gonna need ’em.
Orbital Positioning System sensors
Inertial tracking platform
Passive EM array
Short-range collision-avoidance and docking radar
Omnidirectional radio transceiver
Whipple shield (habitable area only)
Mechanical regenerative life support (atmosphere/water only)
2 x information furnace data systems
Sodium droplet radiators
Not supplied as standard, but a common as-supplied variant adds a partition to convert part of the forward hold into a bay with docking clamps suitable for many surface-to-orbit vehicles.
It’s a classic tail-lander layout of the crudest form: a 30m steel box welded on top of an 8m steel cylinder welded on top of a cheap fusion pulse drive, the latter two surrounded by pellet containers. It couldn’t look more brutalist/functional if it tried. At least most Hariven owners try to give it a bright paint job.
The hold is up front, a big steel box roughly the size of eight standard shipping containers. (Indeed, sometimes it’s made from eight standard shipping containers.) Putting it right for’ard has the advantage of simplifying construction greatly – all the machinery is at one end – and giving Hariven captains the assurance that if they ram their junker into anything accidentally, at least there’s 30m of other stuff between them and whatever they hit.
The hold opens up along its entire length on the port side to permit access. Responsible captains who convert their Hariven for passenger transport (the aforementioned touring bands, refugees, and space hobos, for example) by attaching deck partitions inside the hold and adding canned air have these welded shut. Less responsible captains simply pray for a lack of wiring faults.
The habitable section (the cylinder at the back) is wrapped in auxiliary engineering machinery and fuel storage, to the point that it’s only 4m in internal diameter. (If you need to fiddle with most of the engineering systems, you’re going to need a drone, or to take a walk outside.) It’s divided into four decks, from the bow down:
The bridge, which shares space with most of the avionics;
A small living area, which contains the food vat, a tiny galley, the inner door of the airlock, and any luxuries you see fit to squeeze in there. Like chairs;
The crew quarters, which means four vertically-mounted sleep pods, and maybe room for another luxury or two if they’re small;
And a tiny workshop, for any repairs that need doing.
That all sits right on top of the shadow shield and the business end of the drive. If you need to adjust anything below that – well, hope you brought a drone.
But enough of this. You buy this ship, treat her proper, she’ll be with you the rest of your life.
Ain’t sayin’ how long that’ll be, mind.