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design by Pete Grey
This vehicle was based on the design from DGP's 101 Vehicles
With the advent of fusion power and crystaliron construction, the construction of long-duration deep submergence vehicles and vessels finally became feasible. The Tiamat Mining Crawler, first marketed by Sternmetal Horizons (now just Horizons) in the early 900s, was one of the most common PC designs intended for ocean-floor mining. At 500 tons displacement, the Tiamat is one of the largest free-standing vehicles ever manufactured. The vehicle is not very fast, but it can swim forward on its treads and with the assistance of small propellers, and its performance is decent for mining operations. The vehicle has staterooms for a crew of 40-80 people, an auxillary vehicle bay for crawlers, DSRVs and hardsuits. Two massive robotic arms, capable of lifting 1050 tons each, do the actual mining.
On most TL-9 to 10 worlds, the Tiamat and its cousin the Gashedda are the only means of reaching oceanic resources. Most Tiamats run year-round, recieving relief crews every six months or so. Aside from periodic maintenance, these vehicles almost never see sunlight. The Tiamat is light enough to float, requiring the use of ballast tanks to weigh down the vehicle during mining operations. The vehicle's cargo bay is seperated into two seperate holds: one for normal stores, and the other a combination cargo/ballast bay. A set of water ports and pumps fills the cargo/ballast bay to submerge the vehicle. This water is displaced back out from the bay by ore accumulated from mining operations. As the bay is not large enough to still overcome the vehicles buoyancy, jettisonable weights are carried as well, usually mine tailings. Because the vehicle will be operating under extreme load conditions, the engine and transmission are enormous even for one of this magnitude. Even at full weight, a Tiamat can reach highway speeds of 70 kph, though governors keep it from exceeding this speed when operating at lower loading weights.
The Tiamat listed below is the generic model. Most Tiamats are custom built to customer desires, and fittings include nodule dredges, sickbays and labs, and additional launch and vehicle facilities. Other models include vacuum and fluid atmosphere mining, aquaculture and factory fishing, factory platforms, starship towing and service, and wilderness construction. The Tiamat is named after the sea monster/dragon of ancient Babylonian myth.
Tiamat Mining Crawler
2x70 m3 robotic arms (1,050 tons lifting capability)
Without the engine governor, the vehicle can attain 220 kph road, 88 kph cross country, and 44 kph water. Usually local laws and company regulations strictly forbid either tampering with the transmission, or in allowing a 500 dt vehicle from moving at such a high velocity.