Marine Draft and Water Allowance Terminology
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A set of flashcards summarizing key maritime terms and measurements related to draft and waterline allowances.
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10 Terms
SD
Summer Draft, the vertical distance between the waterline and the bottom of the hull.
FWA
Fresh Water Allowance, the adjustment made to the load line when a vessel is loaded in fresh water.
LT
Length of the ship, related to other measurements such as draft.
LS
Length of the ship, specifically referring to the length amidships.
LWNA
Lumber Waterline, the waterline level when the ship is loaded with lumber.
1/48 of LD
A calculation used to determine specific ship dimensions based on the overall length.
WNA
Waterline with Dredge Adjustment, the draft marking adjusted for specific load conditions.
Assigned Lumber Draft
The designated draft measurement for vessels carrying lumber.
450 mm
A specified measurement, possibly indicating certain limits or conditions.
300 mm
A specified measurement related to draft or clearance levels.
