thanks for you alls input, I am glad I found this site this afternoon. Can you see the outdrive hanging down from the oday? Is that on the oday or a boat parked on the other side of it? I looks rather large and similiar to a mercruiser.
What I see plainly in the photo is the lower unit of a powerboat's outboard or outdrive behind the 25. The OMC ZEPHYR Saildrives were located further forward and access was through the cockpit sail locker (a tight squeeze I'll admit!). I'm not sure that the access to the later 7.5hp Diesel in the 25/26 was any bettter.
The ZEPHYR was based on the powerhead of an Evinrude/Johnson 35 hp outboard motor, detuned to 15 hp. Parts should still be available for the powerhead...... but Bombardier does seem to be phasing out "older" parts.
The CAPE DORY Typhoon Senior (22'), the original CD 25 and the later 26 all had outboards located in "inboard" wells located just forward of the transom at the aft end of the cockpit (actually under the afterdeck). None were originally designed to allow tilting the outboard while not under power, so you were dragging the lower unit (and normally a 3-blade prop) under sail. I personally like the look of these wells as oposed to a bracket on the transom, however... you can't beat the ability to tilt a bracket mounted OB out of the water while sailing or while moored.
Incidently, if you consider how many gas powered inboard boats are out there, and the fact that many numbskulls never follow the simple safety precautions needed for these boats..... it is amazing that more don't blow up. However, with PROPER and SIMPLE precautions, one can very easily go a lifetime of safe operation of any inboard gas engine!! Most explosions are caused NOT by "mechanical" failure, or by "unsafe" engines, but by pure and simple STUPID lack of careful operation by the operators. Diesel boats can and do still burn and/or explode. I'd be much more concerned about many of the Propane installations on boats than about having a gas inboard. Butane stoves are also getting popular, and far too many people store the gas cartridges inside the cabin, can you say BOOM!! when they leak?