Using sheet 25 in the Guidance Manual for Loading M.V. Grand Haven, determine the amount of ballast required in tank No. 5 (P & S) to maintain drafts of 17'-00" forward and 22'-06" aft for a vessel loaded with grain which has a test weight of 33 lbs.

Correct Answer: Option D — 1070 tons each

Sheet 25 of the M.V. Grand Haven Guidance Manual provides trim and stability interpolation tables indicating that a 33 lb test weight grain cargo requires 1070 tons of ballast in each No. 5 port and starboard tank to hold required drafts.