1. What Is Gross Tonnage?

Gross Tonnage (GT) is a dimensionless index calculated from the total molded volume of a ship. It represents the overall internal volume of a vessel 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:

• \( K \) — Coefficient (typically between 0.22-0.32)
• \( V \) — Total volume of all enclosed spaces of the ship in cubic meters

Explanation: The coefficient K is determined by the formula K = 0.2 + 0.02 × log₁₀(V) according to the International Convention on Tonnage Measurement of Ships.

3. Importance Of Gross Tonnage Calculation

Details: Gross Tonnage is a principal measurement of ship size that affects regulatory requirements, port dues, safety rules, and manning regulations. It's an important factor in maritime law and ship classification.

4. Using The Calculator

Tips: Enter the coefficient value (K) and the total volume (V) in cubic meters. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between gross tonnage and deadweight tonnage?
A: Gross tonnage measures the total internal volume of a ship, while deadweight tonnage measures the weight a ship can carry (cargo, fuel, etc.).

Q2: How is the coefficient K determined?
A: According to international convention, K = 0.2 + 0.02 × log₁₀(V), where V is the ship's total volume in cubic meters.

Q3: Why is gross tonnage important?
A: It determines registration fees, port dues, safety regulations, and manning requirements for vessels.

Q4: Does gross tonnage represent actual weight?
A: No, it's a measure of volume, not weight. One gross ton equals 100 cubic feet (2.83 m³) of enclosed space.

Q5: Are there different tonnage measurements for ships?
A: Yes, besides gross tonnage, there's net tonnage (revenue-earning space) and deadweight tonnage (carrying capacity).