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Glossary - L

Lagan Goods cast overboard from a ship which afterwards perishes, buoyed so as to render them recoverable
Landmark Easily seen object on land that serves as a guide, esp. to ships at sea.
Latitude (Parallels of). Angular distance north or south from the equator of a point on the earth's surface. The equator is 0°. The poles are 90°.
Leeward (Lee) Direction away from the wind.
Leeway Sidewise movement of a vessel through the water, caused by wind or current.
LIDS  London International Dive Show.
Lifting Bag A bag like device that is inflated underwater to lift objects from the bottom.
Line Rope and cordage used aboard a vessel.
List The leaning of a vessel to one side, caused by misplaced gear or shifting cargo.
Live aboard A diving boat that one stays on (lives aboard) as opposed
to staying in a hotel.
Log Book A divers record book containing all the dive details.
Longitude (Meridians of). Angular distance east or west on the earth's surface, measured from the prime meridian that is 0° and runs through Greenwich, England. The International Date Line is 180°.
Loop A circle of rope made by bringing two parts of the rope together without crossing them over each other
LP Low Pressure
Lubber Line A mark on the bowl of a marine compass or diving compass  which indicates the boat or divers heading.
Lunar Day This is the time interval between two successive transits of the moon over the same meridian.  It averages about 24 hours and 50 minutes.  The minutes in excess of 24 hours vary from 38 to 66 minutes due to the irregular speed of the moon along its orbit.  Because the moon crosses the meridian later each day, there is always a day in each synodical month in which there is no meridian passage, another in which there is no moonrise and another with no moonset.

 

 

 

 

 

 

 

 

 

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