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Re The same principles apply surely? We have a sailing catamaran and have folding props. When one engine is running the other prop folds to reduce drag and we cut consumption. The only difference is the hull shape.

Hi, does anyone have any experience of folding props on, for example twin Cat 3208TAs? My thinking is that running one engine instead of two would increase range dramatically at displacement speed and the folding props would eliminate any drag or risk of damage to the idle engine and gearbox...

Empress=transworld!

Yes, that was the plan. Only we are in Europe and there are not many displacement boats around. Hence the interest in semis with the bigger engines.

Thank you. I will try to find some info on those different names. Empress in google remains a mystery brand!

Hi all, I have spotted an interesting trawler style semi displacement 47ft boat with twin 3208TA @ 375hp. "Empress Yachts" I have googled and googled and come up with nothing on this brand which is strange. This one was built in 1990. Does anyone know them? Thanks!

Thank you for all the input. I saw the post on the HOF by coincidence. I have been reading about these Detroits and then started reading about the Caterpillars 3208TA at 375hp. The Cats seem to have better "reviews" and from what I have been able to figure online run well and cheaply at low...

So what kind of gph can be achieved at 8kts with these 8v71tis on the hatteras 53 do you think? Will they run slower than 8kts? Thanks

Thanks all for your input. The boat we are considering is in the ft Lauderdale area. We have also seen a 48 lrc with twin Lehman 120hp and that makes more sense for range and cost but doesn't have the great space and layout of the 53. In the case of the 53 we would cruise slowly to reduce...

Hi all, I'm new to this and switching from a sailboat. We want a comfortable liveaboard that has good range, at least 700nm. We have seen a great 1983 Hatteras 53 extended deckhouse but I am concerned that the consumption will make long distance cruising unaffordable. Tanks are 700 gallons...