Glossary of Nautical Terms - My Sailing Course

Log ReadingThe reading of distance travelled through the water usually taken every hour from the log and recorded in the deck log Read more

LogbookA book to keep a record of events, distance run and courses, etc. Read more

LongitudeThe vertical lines of longitude are called meridians and run from and to the poles, the zero degree line runs through Greenwich, London. The(...) Read more

Look-outVisual watch; Member of the crew responsible for keeping it Read more

Lose WayA vessel loses way when she slows down and stops in the water Read more

LATThe lowest level the tide will reach based on the luna cycle; used as Chart Datum in many publications Read more

Lowest Astronomical TideThe lowest level the tide will reach based on the luna cycle; used as Chart Datum in many publications Read more

Lubber LineThe marker in the compass which is aligned with the fore-and-aft line of the boat against which the course can be read off on the compass card Read more

Luff The luff refers to the forward edge of a sail facing into the wind. Sails' luffs are typically attached to the mast of a boat and can be(...) Read more

Luff UpTo steer a sailing vessel more towards the direction of the wind Read more

LullA temporary drop in wind speed Read more