Question 2576 Deck Safety

The correct answer is D) Tanks: DB1, DT1. To increase the calculated GM (Metacentric Height) from 2.7' to 2.9', you need to add weight low in the vessel to increase the vertical center of gravity (KG). Ballasting the double bottom tanks (DB1) and the deep tanks (DT1) will add weight low in the vessel, increasing the GM as desired. The other options are incorrect because: A) only ballasting DB1 may not be enough to reach the target GM; B) ballasting DT6 in addition to DB1 and DT1 is unnecessary; and C) ballasting DB2 instead of DB1 may not achieve the desired effect.