The molecule, ion, or group bound to the central atom in a chelate or a coordination compound.

A lit navigational aid such as a lighthouse that can be used at night or in poor visibility.

Wind with a speed between 4 and 6 knots (4 and 7 mph), Beaufort scale number 2.

The maximum rope speed (in meters per second) that the winch can maintain with the rope wound on the drum in a single layer, and with negligible tension on the rope, normally not more than 10% of the drum load.

A list of navigational lights arranged in geographical order, giving the position and characteristics.

The water line when the ship rides empty.

An opening in a ship's side, provided with a glazed lid or cover for the admission of light.

A description of how well people in a lighted space can see to do visual tasks and how visually comfortable they feel in that space.

Sails, such as the spinnaker, reacher and reaching staysail used when running or reaching

The trapping of light inside a semiconductor material by refracting and reflecting the light at critical angles; trapped light will travel further in the material, greatly increasing the probability of absorption and hence of producing charge carriers.

Defects, such as dangling bonds, induced in an amorphous silicon semiconductor upon initial exposure to light.

A vessel discharges part of its cargo at anchor into a lighter to reduce the vessel's draft so it can then get alongside a pier.

Holes cut in a plate to make it lighter and yet not reduce its strength.

General name for a broad, flat-bottomed boat used in transporting cargo between a vessel and the shore. The distinction between a lighter and a barge is more in the manner of use than in equipment. The term "lighter" refers to a short haul, generally in c ...

An open or covered barge towed by a tugboat and used mainly in harbors and inland waterways to carry cargo to/from alongside a vessel.

Refers to carriage of goods by lighter and the charge assessed therefrom.

A structure erected to display a characteristic light as a warning of danger at sea and as an aid to navigation.

A prime mover which is suitable only for operating the deck machinery in a light loaded condition. Example: Reeling in of an untensioned rope, or topping an unloaded derrick.

A stationary vessel carrying a light used for navigation, serving the same purpose as a lighthouse.

A smooth hard wood grown in the West Indies which had many maritime uses, such as deadeyes and the sheaves of blocks. Its hardness stood up well to wear, and its smoothness allowed lines to render through easily.