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Nautical mile: Length: Rhumb: Angle: The angle between two successive points of the thirty-two point compass (11 degrees 15 minutes) (rare) [1] Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume Twenty-foot equivalent unit or TEU: Volume: Used in connection with ...
A sailor and a man on shore, both sounding the depth with a line. Depth sounding, often simply called sounding, is measuring the depth of a body of water. Data taken from soundings are used in bathymetry to make maps of the floor of a body of water, such as the seabed topography. Soundings were traditionally shown on nautical charts in fathoms and
A fathom line or fathom curve, a usually sinuous line on a nautical chart, joins all points having the same depth of water, thereby indicating the contour of the ocean floor. [24] Some extensive flat areas of the sea bottom with constant depth are known by their fathom number, like the Broad Fourteens or the Long Forties, both in the North Sea.
The breadth of the hull lines at the widest point, normally at midships and measured inside the hull planking or plating. Used in some systems of tonnage measurement. [14] moulded depth The distance between the horizontal plane of the top of the keel and the top of the main deck beams at the edge of the hull. Compare with freeboard depth. [4]
The outcome of the study was a class of vertical-beam depth sounders, which is still widely used. It simultaneously pinged at two acoustic frequencies, separated by more than 2 octaves, making depth and echo-amplitude measurements that were concurrent, both spatially and temporally, albeit at a single vertical grazing angle. [clarification needed]
A measure of length or distance equivalent to 1 ⁄ 10 nautical mile (608 feet; 185 metres) in the United Kingdom and 100 fathoms (600 feet; 183 metres) in the United States; other countries use different equivalents. caboose A small ship's kitchen or galley on deck. cabotage
Glossary of nautical terms may refer to: Glossary of nautical terms (A–L) Glossary of nautical terms (M–Z) This page was last edited on 21 December 2024 ...
Keel depth (sometimes given as Depth to keel) is the depth (or draft) of water from the water surface to the keel of a vessel, the deepest part. The keel establishes a commonly defined reference point to measure to. Keel depth is useful for determining safe operating depth in shallow water.