I agree with Twisted. I would not choose a boat, because it had a turbo or didn't. I don't know how much work the turbo on current boat is doing at the RPMS that I normally run, 1200-1800. It is a Cummings QSB 330hp. I also don't think that they are a maintenance issue either. Of course SH-- does happen. Also in regards to the Cummings, I wonder how much help the after cooler is. Seawater temps where I boat are in the 50 to 65 degree range and air temps, for the most part are the same. Every now and then higher air temps occur and engine room temps run close to 100 degrees. Other than the increase in temp of combustion air due to the turbo, I would think that there is not a lot of differential in those temps. So I would say a trawler without either or both, would also be acceptable
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