{"slug":"api-tradeenergy-api-workers-dev-api-logistics-deadweight-ton-c8459b","title":"Vessel displacement and deadweight estimate from hull dimensions","host":"api.tradeenergy-api.workers.dev","method":"GET","resource":"https://api.tradeenergy-api.workers.dev/api/logistics/deadweight-tonnage-calc","category":"company","description":"Vessel displacement and deadweight estimate from hull dimensions: volume = length × beam × draught × block coefficient; displacement = volume × water density (sea 1.025, fresh 1.000 t/m³); deadweight = displacement − lightship weight (if given). Also returns the cargo capacity left after fuel, store","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":35,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:10","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:480","eip155:5042","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet","xrpl:0"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"beamM":"30","blockCoefficient":"0.8","draughtM":"10","lengthM":"180","lightshipTonnes":"9000"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"beamM":{"description":"Moulded breadth in metres (required)","type":"string"},"blockCoefficient":{"description":"Block coefficient Cb, 0.35-0.90 (default 0.75; tankers/bulkers ~0.8-0.85, container ships ~0.6-0.7)","type":"string"},"consumablesTonnes":{"description":"Optional fuel, fresh water, stores and ballast on board, tonnes","type":"string"},"draughtM":{"description":"Draught in metres (required)","type":"string"},"lengthM":{"description":"Length between perpendiculars in metres (required)","type":"string"},"lightshipTonnes":{"description":"Optional lightship weight in tonnes, to get deadweight","type":"string"},"water":{"description":"sea (default, 1.025 t/m³) or fresh (1.000 t/m³)","type":"string"}},"required":["lengthM","beamM","draughtM"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-10-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":35,"error":null}],"description_full":"Vessel displacement and deadweight estimate from hull dimensions: volume = length × beam × draught × block coefficient; displacement = volume × water density (sea 1.025, fresh 1.000 t/m³); deadweight = displacement − lightship weight (if given). Also returns the cargo capacity left after fuel, stores and ballast you enter. A design-stage estimate from standard formulas, not a vessel's official DWT; no ship registry lookup.","last_updated":"2026-10-23T23:19:49.957Z","schemes":["exact"]}