The hinges look like those on a Vetus hatch on my 1977
Islander 32mk2.
It needed new hinges and the stretch rubber and plastic "dogs" that tension it shut.
Vetus was no help at all in finding either the hinges or the
dogs. Yes, it is a 40+ year old product, but it was disappointing not to be able to get
parts.
A friend fabricated new hinges for me out of
aluminum that are much more durable than the original plastic.