
Technical Specifications
Overview
USNS Alatna, was a gasoline T1 tanker specially constructed for service in polar regions, was launched on 6 September 1956 at Staten Island, New York, by the Bethlehem Steel Corporation, sponsored by Mrs. Wilma Miles, and placed in service with the Military Sea Transportation Service in July 1957. Crewed by the civil service, Alatna carried petroleum products from ports along the Atlantic and gulf coasts and in the Caribbean Sea to scattered American outposts in both polar regions. For more than 15 years, the tanker and her crew struggled against snow, wind, and ice to support American military bases in the Arctic and American scientists in the Antarctic. On 8 August 1972, Alatna was placed out of service and laid up with the Maritime Administration's National Defense Reserve Fleet at Suisun Bay, California. The Alatna Valley in the Antarctic was named after this ship.
Composite Risk
Multiple adverse factors, or a hard ship-specific signal, lift this hull above the fleet norm.
A coverage-weighted blend of the single component we could read for this hull; the weights renormalise over only the components present, so a thin read is never inflated and a hull is never credited a “safe 0” for a signal it has no row for. This headline is flagged low-confidence (a thin or structural-only read) and should not be treated as a verdict. Higher means riskier. Derived in-house from government-open port-State-control, flag, sanctions and our own vessel data; weight it by the coverage above.
Commercial
Price it in the Route Planner between any two commercial ports: ballast and laden legs, two fuels at live bunker prices, port and canal costs, the weather on the way, and the TCE set against the market.

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