The DEEP DRILLER is loaded as shown in the Sample Load Form #4 (Drilling). According to the deck load graph, how much additional deck load could be added on the unit?

Correct Answer: Option B — 461.87 long tons

Evaluating variable deck loads from Sample Load Form #4 requires analyzing the unit's approved operational envelope curves. Subtracting current center-of-gravity moments and applied loads from maximum allowable limits yields a remaining safe additional deck load capacity of exactly 461.87 long tons.