First, let me clarify that Chartercats closed shop in 2005 and no longer builds a powercat. They have been resurrected as ClassicCats, and now build the Jaguar sail cat. CruiserCats ( a new company) acquired the 42 Prowler molds and is now building the Tortuga and the Havana 38. See the article in July-Aug Motorboating. I'v looked for photos of engine room access on my prowler, and can't find any at hand. I'll be back on the boat in several weeks in the Bahmas and submit then.. My cat has twin Yanmar 240's and they are located beneath the aft staterooms. Top access is very easy, filters are readily accessible, but impellers are almost impossible and require dismantling the coolant and exhaust hoses and entire raw water pump. Long arms and short wrenches help. Starters are also quite difficult. T. Hanna