Lens Hood

[Robert McDonald]

While a lens hood can provide protection from incidental light, or even act as a lens guard, I strongly advise removing the hood when conditions allow. Variable length lens can yield a useless shot with an annoying shadow. See examples attached.

Gear: Lumix FZ1000
Processing: Affinity Photo

Answer you own question by taking test shots, as I just did. Better to learn for yourself.

[Owen Foley]

I strongly advise removing the hood when conditions allow. Variable length lens can yield a useless shot with an annoying shadow. See examples attached.

That shadow is due to using an on-camera flash shooting from behind the lens hood.
That's not something that's likely to affect too many ship photographers.
Don't use an on-camera flash with a large lens hood.

[pieter melissen]

on top of that a lens hood will hamper the turning of the polarizer, a must for ship spotters.