edbulmer wrote:
I do have one in mind that has two new diesel motors. *In a trawler would that be your biggest expense?
Not in my opinion, and we own a twin.* I think insurance and moorage probably top the list of the highest regular expenses.* The boats' systems--- plumbing, electrical, electronics, galley, etc--- and the ongoing costs of maintaining, repairing, and upgrading them are not related to the number of engines in the boat.* So, too, will maintenance and repair items like decks, canvas, windows, etc.
The cost difference between one engine and two lies primarily in the fact you have to buy two of everything in terms of maintenance.* Twice the oil, two times the filters, etc.* Assuming the same boat and the same type of engine, a twin will burn more fuel than the single but not twice as much (in most cases).
Where the twin can cost a lot more is if you have to have major work done on the engine(s), transmission(s), or running gear.* Only one of all this on the single, but twice the amount of stuff on the twin.* So if you need new motor mounts, for example, as we did a number of years ago, you are paying the labor to uncouple, jack up, reconnect, and align two engines, not just one.
Fortunately this sort of thing doesn't come around very often.* But it is something to keep in mind, particularly if your budget has you looking for an older boat.
-- Edited by Marin on Thursday 4th of August 2011 11:41:08 PM