Deck General · Mooring — Chafe & Rats
Rat guards are fitted on mooring lines while alongside in order to:
- APrevent rodents from boarding or leaving the vessel via the lines✓ Correct
- BPrevent chafe on the line
- CMark the line length
- DTension the line
Explanation
Rat guards are inverted cones placed on mooring lines (and the gangway) to stop rats from traveling between ship and shore—a quarantine/public-health measure. Chafe is addressed separately with chafing gear at chocks.
Authority: Public health / port practice
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