Vessel displacement and deadweight estimate from hull dimensions
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.
Answeringour last check, 2026-10-24
1 of 1checks answered this week
35 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://api.tradeenergy-api.workers.dev/api/logistics/deadweight-tonnage-calc
| Category | Company and compliance |
|---|---|
| Provider host | api.tradeenergy-api.workers.dev |
| Networks | eip155:10, eip155:137, eip155:143, eip155:42161, eip155:42220, eip155:480, eip155:5042, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, stellar:pubnet, xrpl:0 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-24 | valid payment request | 402 | $0.002 | 35 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"beamM": "30",
"blockCoefficient": "0.8",
"draughtM": "10",
"lengthM": "180",
"lightshipTonnes": "9000"
},
"type": "http"
}
Promised output schema (from the provider)
{
"$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/m\u00b3) or fresh (1.000 t/m\u00b3)",
"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"
}