Glossary

A propeller is a fan-like device that propels a boat or ship through the water by converting rotational motion into thrust. Propellers typically...

A propeller shaft is a long, cylindrical metal shaft that connects the boat's transmission or gearbox to the propeller. It transmits power from...

The lateral movement of a boat's stern caused by the rotational forces of the propeller, typically noticeable when operating at low speeds or in...

The turbulent flow of water generated by a vessel's propeller as it moves through the water, often creating strong currents and turbulence behind...

A raised structure at the bow of a vessel, often made of metal, designed to provide safety for crew members working at the front of the...

A sturdy, protective railing or guardrail located at the stern of a boat, often forming part of the vessel's safety framework.

The pushpit,...

A device or material designed to produce light, heat, smoke, or sound through a chemical reaction, commonly used in marine signalling for...

The International Maritime Signal Flag Quebec.

Meaning

Quarantine Flag.
My vessel is healthy and I request free pratique.

Also known as the "Quebec Flag," is a solid yellow maritime signal flag used to indicate that a vessel is requesting clearance to enter a port...

Flag semaphore indicating the letter Q.

International Morse Code sequence representing the letter Q.

A small sleeping area located beneath the cockpit on a sailing or motor vessel, typically positioned on one side of the boat's stern.

A...

Pronounced: keh-BECK

The term for the letter Q in the NATO Phonetic Alphabet.

A passive device designed to enhance a vessel's visibility on radar systems by reflecting radar signals back to their source.

A radar...

A communication made via radio from a vessel to a shore-based medical facility or professional to seek urgent medical advice or assistance for an...

Two or more vessels secured alongside each other.

This arrangement is common in crowded harbours, at busy pontoons, on visitor moorings or...

A ship that, due to the nature of its work, is unable to keep out of the way of other vessels as required by the International Regulations for...

The vertical difference between the high tide and the succeeding low tide in a specific tidal cycle.

The range of tide is a fundamental...