Deck General · Mooring — Springs
The mooring lines that primarily prevent a moored vessel from surging forward and aft along the pier are the:
- ABreast lines
- BHead lines only
- CSpring lines✓ Correct
- DStern lines only
Explanation
Spring lines lead at a shallow angle fore and aft; the forward and after springs together restrain surging (longitudinal motion) along the berth, while breast lines control off-berth motion. A balanced set shares the load.
Authority: Knight's Modern Seamanship
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