Enter the wind speed (knots) and the boat length (m) into the Anchor Chain Rope Length Calculator. The calculator will evaluate the Anchor Chain Rope Length. 

Anchor Chain Rope Length Formula

The following two example problems outline the steps and information needed to calculate the Anchor Chain Rope Length.

ARL = WS*1.5 + BL

  • Where ARL is the Anchor Chain Rope Length (m)
  • WS is the wind speed (knots) 
  • BL is the boat length (m) 

How to Calculate Anchor Chain Rope Length?

The following example problems outline how to calculate Anchor Chain Rope Length.

Example Problem #1:

  1. First, determine the wind speed (knots). 
    • The wind speed (knots) is given as: 15.
  2. Next, determine the boat length (m). 
    • The boat length (m) is provided as: 10.
  3. Finally, calculate the Anchor Chain Rope Length using the equation above: 

ARL = WS*1.5 + BL

The values provided above are inserted into the equation below and computed.

ARL = 15*1.5 + 10 = 32.5 (m)


Example Problem #2: 

For this problem, the variables required are provided below:

wind speed (knots) = 20

boat length (m) = 40

Test your knowledge using the equation and check your answer with the calculator..

ARL = WS*1.5 + BL = ?