On Sun, 22 Mar 2020 19:05:58 +0000, Richard Smith
wrote:

Hello all

You are a group with a lot of technical interests and knowledge.

Boats - for a vessel with a single screw and about 500HP, or a
twin-screw vessel with about 1000HP (500HP each engine and gearbox
drive)...

Some have a/two straight-6cylinder engine(s) like the Cummins K19(M?)

Some have a/two Caterpillar 3412 V12 engine(s)

Why?

The straight-6 would be - cheaper? simpler?
The V12 would be - ... ?

Thanks in advance is you can help take this curiousity to its
end-point.

Regards,
Rich S

You want to be many miles out at sea and have your only engine pack
up?

Thats one of the main reasons to have 2 or more engines.
Secondly..each engine turns its own prop. 2 props push mass far far
better than one..so it can be more efficient and much faster
underweigh.

The advantages of 2 props that are independantly reversable for boat
handling is also a very BIG advantage. (along with an engine for a bow
thruster)

Gunner
__

"Journalists are extremely rare and shouldn’t be harmed, but propagandists are everywhere and should be hunted for sport"

Yeah..with no bag limit.




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