Page 432 - statbility for masters and mates

420 Ship Stability for Masters and Mates
(i) how the true mean draft is obtained; (10) (ii) why it would be incorrect to use the arithmetic mean draft. (5)
(b) AshipoflengthBP56mis¯oatingatdraughts2.70mforwardand 3.00 m aft.
Using Hydrostatic Particulars `B' Datasheet Q.5:
Calculate the vessel's true mean draught and displacement. (15) 6. Illustrate EACH of the following with labelled sketches:
(a) the sheer/stringer strake connection at a deck transverse frame station; (10) (b) a duct keel; (10) (c) the watertight closing (or sealing) arrangements for a deep tank lid. (10)