Glossary Archive

Refers to something located in the forward left quadrant of a vessel, between directly ahead and 90 degrees to the port (left) side. "On the Port Bow" is a directional term used in maritime navigation to describe the relative position of an object or another vessel in relation to the observer's own ship. Specifically, it...

At an angle to the stern of your vessel, but abaft the beam, to the left

Refers to a position or object located forward of the vessel and to the right-hand side when facing the bow (front) of the ship. "On the starboard bow" is a navigational term used to describe the relative bearing or position of an object, landmark, or another vessel in relation to the ship's orientation. The term...

The area of a vessel located towards the rear (aft) on the right-hand side when facing forward. The phrase "on the starboard quarter" is a navigational and positional term used in maritime contexts to describe a specific location relative to a vessel. To break it down, "starboard" indicates the right-hand side of the vessel when...

The designated officer responsible for the safe navigation and operation of a vessel during their assigned watch period.  The Officer of the Watch (OOW) is a key role on a vessel, ensuring the ship's safe passage and adherence to regulations while on duty. The OOW is responsible for maintaining a proper lookout, monitoring navigational equipment,...

Pronounced: OSS-cah The term for the letter O in the NATO Phonetic Alphabet.

A line or tackle system used to adjust the tension and position of the sail's clew along the boom, affecting the sail's shape and performance. The outhaul is an essential control line on a sailing vessel, particularly for adjusting the mainsail. It is attached to the clew of the sail, which is the lower aft...

Rough, disturbed water caused by tidal flow over uneven seabed or conflicting streams. These areas often form where strong tidal streams pass over banks, ledges, headlands or sudden changes in depth. The surface may appear broken, steep, confused or choppy, even when conditions nearby look moderate. Sea state can become worse when wind opposes tide....

A loop that crosses on top of the standing part of a rope when tying a knot.

The line at the bow of a dinghy