Question 2660 Deck General

The correct answer is B) 2 B-I. According to the regulations in 46 CFR 25.30-10, for a 45-foot uninspected towing vessel with a fixed fire system on board, the minimum number of portable fire extinguishers required is 2 B-I. This is because the fixed fire system is considered one of the required fire extinguishers, and the vessel must have a total of 3 B-I units, with 2 being portable and 1 being the fixed system. The other options are incorrect because A) 1 B-I is not enough, C) 3 B-I is more than the required minimum, and D) 4 B-I is also more than the required minimum.