1-8.1 DIFFERENCES BETWEEN MODELS. There are two models of the Bridge Erection Boat, the MK1 and the MK2.
The two models have different engine cooling systems and air-exhaust systems. The MK2 also has several
additional features not on the MK1.
MK2. Each MK2 engine uses two dosed cooling systems which share a common reservoir. The MK2 uses a wet
exhaust system similar to the MK1. The hydrojet forces raw water into the exhaust system and out the exhaust
port on the side of the boat.
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