A 23ft Electric Catamaran | Tying A Bowline | Capt. Cooks Ship - 9/1/25
⚓US Coast Guard Captain's LicensePractice Question - Answer
D. A spherical topmark
Safe water marks, which indicate unobstructed waters, are distinguished by a spherical topmark in addition to their red and white vertical stripes. The topmark provides a quick visual cue, especially at a distance, to help mariners identify these buoys.
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