1. What is Gross Tonnage?

Gross Tonnage is a measure of a boat's total internal volume, calculated from its principal dimensions. It represents the overall size of the vessel and is used for regulatory purposes, classification, and determining applicable rules.

2. How Does the Calculator Work?

The calculator uses the Gross Tonnage formula:

Where:

• \( L \) — Length of the boat (feet)
• \( B \) — Breadth of the boat (feet)
• \( D \) — Depth of the boat (feet)

Explanation: This formula provides an approximation of the vessel's internal volume based on its main dimensions, converted to tons.

3. Importance of Gross Tonnage Calculation

Details: Gross Tonnage is crucial for vessel registration, determining safety requirements, calculating port fees, and complying with international maritime regulations.

4. Using the Calculator

Tips: Enter the boat's length, breadth, and depth in feet. All values must be positive numbers. The calculator will compute the gross tonnage based on the standard formula.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between gross tonnage and displacement tonnage?
A: Gross tonnage measures internal volume, while displacement tonnage measures the actual weight of water displaced by the vessel.

Q2: Is this formula applicable to all types of boats?
A: This simplified formula provides a general approximation. Specific vessel types may require more complex calculations.

Q3: How accurate is this calculation?
A: This formula provides a reasonable estimate for most conventional boat designs, but complex hull forms may require more detailed calculations.

Q4: Why is gross tonnage important for boat owners?
A: It determines regulatory requirements, safety equipment needed, and affects licensing and insurance costs.

Q5: Can this calculator be used for commercial vessels?
A: While it provides a basic estimate, official tonnage calculations for commercial vessels typically require more detailed measurements and certified surveyors.