What percent range is recommended for storm anchor effectiveness relative to service anchor?

What percent range is recommended for storm anchor effectiveness relative to service anchor?

• A. 100-125%
• B. 150-200%
• C. 125-150%
• D. 150-180%

Answer: (B)

In storm conditions, loads on a mooring increase significantly due to wind, waves, and current, so the storm anchor must have more holding power than the service anchor. The recommended range is 150 to 200 percent of the service anchor’s holding capacity, meaning the storm anchor should be able to withstand about 1.5 to 2 times the force the service anchor could handle. This margin accounts for higher dynamic loads, surge, and potential reductions in holding effectiveness from soil conditions or wear, providing a safe cushion against dragging or failure in heavy weather. Ranges below this level don’t give enough reserve for storms, while this 150–200% range is the standard balance between safety and practicality.

In storm conditions, loads on a mooring increase significantly due to wind, waves, and current, so the storm anchor must have more holding power than the service anchor. The recommended range is 150 to 200 percent of the service anchor’s holding capacity, meaning the storm anchor should be able to withstand about 1.5 to 2 times the force the service anchor could handle. This margin accounts for higher dynamic loads, surge, and potential reductions in holding effectiveness from soil conditions or wear, providing a safe cushion against dragging or failure in heavy weather. Ranges below this level don’t give enough reserve for storms, while this 150–200% range is the standard balance between safety and practicality.