Perkins Sabre M65 Questions

[CREOLE-BELLE]

I recently purchased a 1985 Gale Force 34 in St. Lucia. The previous owner in 2000 installed a Perkins Sabre M65. It has 600 hours on the meter. I have yet to get her in the water. I realize that 65 hp is overpowered for a 20,000 lb, 34 ft sail boat.

Questions are:

Should I be concerned with not sufficiently loading the engine during normal operation?

Should I expect poor fuel economy due to an oversized engine?

Perkins markets this engine as an engine that, due to its design, has a longer time between maintenence i.e. oil changes. I'm assuming this means a rugged design. Any comments on this assumption?

Thanks for your inputs......Bob