GL: potential water leakage

[Coral Hadler]

Hello Guys,

A mechanic told us the other day that we were incorrectly hosed, and we could
easily sink.  A scary thought indeed.  But mechanics have been wrong in the
past and our boat has been plumbed like this since coming from the factory, so
before we commit to change, we want your opinions.

Raw water comes into the boat as follows:
    Raw water strainer to engine water pump through engine to after
cooler to transmission and oil cooler to venturi tube to wet exhaust to
out.

Is this the correct arrangement or not???

Thanks,
Sue