Assuming that the recommended hatch loading sequence is followed, how many long tons of iron ore may be loaded through hatch No. 23 while using a single belt loader to arrive at a desired mean keel draft of 28'-00"? (Use the Guidance Manual for Loading M.V. GRAND HAVEN.)

Correct Answer: Option D — 3240 tons

Using the M.V. Grand Haven loading manual, calculating the longitudinal center of flotation and the effect of loading in hatch No. 23 on the mean keel draft requires applying the vessel's specific deadweight scale and trim tables, which confirms 3240 long tons as the required cargo weight.