1. What is Gross Tonnage?

Gross Tonnage (GT) is a nonlinear measure of a ship's overall internal volume. It is calculated from the total enclosed volume of the ship and is used to determine things like manning regulations, safety rules, and registration fees.

2. How Does the Calculator Work?

The calculator uses the Gross Tonnage formula:

Where:

• \( L_{ft} \) — Length of the vessel in feet
• \( B_{ft} \) — Breadth (beam) of the vessel in feet
• \( D_{ft} \) — Depth of the vessel in feet
• 0.67 — Empirical coefficient

Explanation: The formula calculates the total enclosed volume of a vessel and converts it to gross tons using the standard coefficient.

3. Importance of Gross Tonnage Calculation

Details: Gross Tonnage is crucial for ship classification, determining applicable regulations, calculating port dues, and assessing safety requirements.

4. Using the Calculator

Tips: Enter the vessel's length, breadth, and depth in feet. All values must be positive numbers. The calculator will compute the Gross Tonnage.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between Gross Tonnage and Net Tonnage?
A: Gross Tonnage represents the total internal volume, while Net Tonnage subtracts non-cargo spaces and represents earning capacity.

Q2: Is Gross Tonnage the same as displacement?
A: No, displacement is the actual weight of water displaced by the ship, while GT is a volume measurement.

Q3: How accurate is this simplified formula?
A: This provides a basic estimate. Official tonnage calculations follow more complex regulations.

Q4: What units are used for official tonnage measurements?
A: While feet are commonly used, official measurements may use meters with different coefficients.

Q5: Does this apply to all vessel types?
A: The basic principle applies, but specific vessel types may have modified calculation methods.