Tonnage refers to the weight or capacity of a vessel, often measured in metric tons or gross register tons, influencing freight rates and operational considerations.

Tonnage refers to the measurement of a vessel's size or capacity. It is a vital metric for assessing a ship's capabilities, determining fees, and complying with various regulations. There are two primary tonnage measurements:

1. Gross Tonnage (GT)

This measurement represents the total internal volume of a ship, including all enclosed spaces. It provides an indication of the vessel's overall size, but it doesn't account for cargo, passengers, or fuel.

2. Net Tonnage (NT)

Net tonnage is a measurement that considers the earning space available for cargo and passengers. It subtracts spaces dedicated to crew quarters, machinery, and other non-revenue-generating areas from the gross tonnage.

Tonnage measurements are crucial for regulatory purposes, such as determining a ship's registration fees, assessing port dues, and ensuring compliance with international maritime safety and environmental regulations.

Additionally, tonnage plays a role in categorizing ships into different size classes, influencing safety standards, and providing a standardized measure for the global maritime industry.

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