Maritime glossary · Net Tonnage
NT
Gross Tonnage minus the volume of spaces not available for cargo — used for canal tolls and certain port dues.
Definition
Net Tonnage is derived from Gross Tonnage by deducting the volume of spaces not used for cargo — crew quarters, machinery, navigation, ballast tanks. Like GT, it is a unitless volume figure under the 1969 Tonnage Convention. NT is the basis for Suez Canal and Panama Canal tolls (each canal has its own variant — SCNT and PC/UMS NT respectively), and for some port and lighthouse dues.
How Vessel Hunter uses NT
NT, GT, and DWT all appear on the Vessel Hunter spec sheet so brokers, port agents, and operators see the same vessel-card their CRM and accounting systems quote against.
Related terms
- GTGross Tonnage
A unitless measure of a vessel’s total enclosed volume — used for port dues, pilotage fees, and SOLAS thresholds.
- DWTDeadweight Tonnage
The maximum weight in tonnes a vessel can carry — cargo, fuel, ballast, crew, stores — without exceeding its load line.
The bigger picture
NT is one piece of the commercial maritime picture Vessel Hunter pulls together for shipyards, port agents, and service providers. Every vessel record bundles AIS, ownership, inspections, dry-dock history, casualty record, classification status, and a verified contact for the operator decision-maker behind the ship — so the team that reaches out first wins the work.
Continue reading: full maritime glossary · every Vessel Hunter feature · where the data comes from.