Sailing Boat Tonnage Calculator

Thames Measurement Formula:

\[ Tonnage = \frac{Length \times Beam \times Depth}{Coefficient} \]

Length:

Beam:

Depth:

Coefficient:

number

Tonnage:

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1. What is the Thames Measurement Tonnage?

The Thames Measurement is a method for calculating the tonnage of sailing boats. It provides a standardized measurement of a vessel's size and capacity, which is important for registration, racing classification, and other maritime purposes.

2. How Does the Calculator Work?

The calculator uses the Thames Measurement formula:

\[ Tonnage = \frac{Length \times Beam \times Depth}{Coefficient} \]

Where:

\( Length \) — Length of the boat (feet)
\( Beam \) — Width of the boat at its widest point (feet)
\( Depth \) — Depth of the boat (feet)
\( Coefficient \) — A constant factor that varies based on measurement standards

Explanation: This formula calculates the volumetric measurement of a sailing vessel, which is then converted to tons using an appropriate coefficient.

3. Importance of Tonnage Calculation

Details: Accurate tonnage calculation is crucial for vessel registration, determining port fees, racing classification, insurance purposes, and compliance with maritime regulations.

4. Using the Calculator

Tips: Enter the boat's length, beam, and depth in feet, along with the appropriate coefficient. All values must be positive numbers. The coefficient typically ranges from 95 to 100 for most sailing vessels.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical coefficient value for sailing boats?
A: The coefficient typically ranges from 95 to 100, with 100 being the most commonly used standard value for Thames Measurement.

Q2: How does Thames Measurement differ from other tonnage measurements?
A: Thames Measurement is specifically designed for sailing vessels and focuses on length, beam, and depth, while other measurements may include different factors or use different formulas.

Q3: Where are the measurements taken on the boat?
A: Length is measured from stem to stern, beam is the maximum width, and depth is measured from the deck to the bottom of the hull.

Q4: Is this measurement used internationally?
A: While Thames Measurement was originally developed in England, it's recognized and used in various international sailing contexts, particularly for classic and traditional boats.

Q5: Can this calculation be used for motor boats?
A: Thames Measurement is specifically designed for sailing vessels. Motor boats typically use different tonnage measurement systems.