[CaptainHaplo]

You all are getting closer....

This actually is a reference to the inability to simply paint a submarine whilst as it is underwater.

See here:

Un - not

sub - A vessel operating under the surface

stainable - the ability to be painted.

Thus what we have here is:

"Log of the Good Ship Unabletobepaintedwhileunderwater" - to which I would note that:

A) in the case of disaster not during wartime, logs should be sealed in a waterproof canister so for salvage

and

B) any Captain who earned the title would know that he could therefore paint his vessel once it was surfaced.

This now concludes my take on this sillyness.... for now.