Which bottom type provides better holding power for anchoring?

Which bottom type provides better holding power for anchoring?

• A. Muddy or sandy bottom
• B. Rocky bottom
• C. Seaweed-covered bottom
• D. Coral or rocky mixed bottom

Answer: (A)

Holding power comes from how well the anchor can bury and set in the bottom. Soft bottoms like mud and sand let the anchor’s flukes sink in and grab, forming a secure plug that resists the pull of the boat. In these conditions the anchor can bury deeply and rely on the soil’s friction and, for some designs, the soil’s cohesion to hold the vessel in place. By contrast, rocky or coral bottoms offer little material to bite into; the anchor can’t set deeply and may just skim along the surface or snag on irregularities, reducing holding effectiveness. Seaweed-covered bottoms can also hinder proper setting by wrapping around the gear and preventing burial. So muddy or sandy bottoms give the best holding power for anchoring.

Holding power comes from how well the anchor can bury and set in the bottom. Soft bottoms like mud and sand let the anchor’s flukes sink in and grab, forming a secure plug that resists the pull of the boat. In these conditions the anchor can bury deeply and rely on the soil’s friction and, for some designs, the soil’s cohesion to hold the vessel in place. By contrast, rocky or coral bottoms offer little material to bite into; the anchor can’t set deeply and may just skim along the surface or snag on irregularities, reducing holding effectiveness. Seaweed-covered bottoms can also hinder proper setting by wrapping around the gear and preventing burial. So muddy or sandy bottoms give the best holding power for anchoring.