Just what is a commercial or continuous duty rating on an engine, and should you get that? Matt starts this chapter with the reason that these ratings exist, and then moves on to how to select the correct engine duty rating for a displacement boat.
In the last chapter in this Online Book, John wrote about how chronic underloading of your engine can wreck it, as well as waste fuel and produce unnecessary carbon. In this chapter we get to the good stuff: how to solve the problem for both new and existing engines.
So far in this Online Book we have learned about the fundamentals of engine and propeller efficiency and, in the last chapter, we looked at a way to make our existing engines a bit more efficient. In this chapter Matt explains a much better way to get the very most out of every drop of diesel fuel.
John, who has done three of them, fervently hopes that this will be his last repower. Read along as he spends three months fulltime at one of the best diesel repower shops in the world, sweating the details to make this installation the best it can be.
All engines have tradeoffs, but by really thinking about the theory we have learned in the first chapters as we select a new engine, we can make a big difference to efficiency and reliability. Here’s an example.
Up to now in this online book we have looked at the theory behind designing an efficient engine and drivetrain for a displacement cruising boat. Now we will dive into a real world example as John shares the story of the last repower of Morgan’s Cloud.
Nothing on this website or in direct communications received from us, or in our articles in the media, should be construed to mean or imply that offshore voyaging is anything other than potentially hazardous. Dangers such as, but not limited to, extreme weather, cold, ice, lack of help or assistance, gear failure, grounding, and falling overboard could injure or kill you and wreck your boat.
Decisions such as, but not limited to, heading offshore, where you go, and how you equip your boat, are yours and yours alone. The information on this web site is based on what has worked for the authors in the past, but that does not mean it will work for you, or that it is the best, or even a good way for you to do things.