If my memory is correct, Monolith used to sell a couple different Egyptian ships (28mm) from this period, and may have had a Sea Peoples variant. I am not sure what has ever become of Monolith's ranges though.
I think Scheltrum Miniatures also had a few ship variants (28mm) from this period that would have worked, but like Monolith, I am not sure what has become of Scheltrum, but I have been advised by friends in the UK that they still trade, sort of...