User:Kablammo/Draft: Depth of hold v. moulded depth
Confusion between "depth" and "draught" is common on Wikipedia, no doubt in part caused by use of the abbreviation "D" in some sources. Wikipedia has no separate article on depth of hold, and moulded depth links to a section on "metrics" in a general article on watercraft hulls, where the term is defined.
Sources:
- Rundell, W. W., "Tonnage Measurement, Moulded Depth, and the Official Register in Relations to the Tonnage of Iron Vessels", Marine Engineer and Naval Architect, Volumes 5-6, p. 12. April 1, 1883.
- Explanation of the following Tables of Freeboard for the various Types of Steam and Sailing Vessels, Board of Trade (1885), republished in The Pamphlet Collection of Sir Robert Stout: Volume 54 by the Victoria University of Wellington.
- Depth of Hold, Merriam-Webster (2019): distance from the underside of the tonnage deck plank amidships to the ceiling of the hold of a ship.
- Depth of hold: distance between either the bottom of the main deck or the bottom of its beams and the limber boards, measured at the midship frame. Appears to be photocopy from a version of this, itself copied from Wooden Ship Building and the Interpretation of Shipwrecks, by J. Richard Steffy (1994).
- Moulded Depth IMO definitions of "moulded depth"
- Watson, Thomas Henry, (1898). Naval architecture: a manual on laying-off iron, steel, and composite vessels:
Moulded Depth is the vertical distance from the top of the keel—squared out to the side—and the underside of the upper deck stringer plate at the lowest point of the sheer (see Fig. 5). (p. 5)
Depth of Hold is the distance, at the centre line on the midship frame from the top of the double bottom plating to the top side of the upper deck beams, or, in the case of ordinary turned-up floors, from the top of the wood ceiling (see Fig. 5). (p. 6)