A
draft of 8' is pretty deep for many cruising destinations,
marinas, and small-boat
anchorages.
Notwithstanding, the So-Pac is notorious for deep
anchorages, where 8'-3"
draft shouldn't present too many problems.
Net Tonnage is a measure of volume of a ship, more precisely the volume of a ship that's useful for carrying cargo and passengers. So, essentially you take the internal volume of the ship, and remove the volume of the
fuel,
engine spaces, crew quarters and so on. 100 cubic feet is the volume used for calculating net and gross registered (GRT) tonnage of a ship.
Dead weight tonnage is the actual weight of what a ship can carry. To get this, you take the
displacement of a fully loaded ship and then subtract from that the
displacement of it when totally empty. And since displacement is actually the amount of
water displaced by a vessel, it corresponds to the actual weight of the ship.
See the USCG “TONNAGE GUIDE FOR SIMPLIFIED MEASUREMENT”
http://www.qualitymaritime.info/Pres...mplified_0.pdf
For purposes of Regulatory Measurement (GRT / NRT):
Overall Depth means the vertical distance taken at or near amidships from a line drawn horizontally through the uppermost edges of the skin (outside planking or plating) at the side of the
hull (excluding the cap rail, trunks, cabins and deckhouses, and
deck caps) to the
outboard face of the bottom skin of the
hull, excluding the
keel. For a vessel that is designed for sailing where the interface between the “keel” and the “bottom skin of the hull” is not clearly defined (as is the case with an “integral” or “faired” keel), the
keel is included in the “overall depth”.