Un navire a une assiette positive de 1 m, ou qu'il est 1 m sur le cul.

A ship has a positive base of 1 m, or that it is 1 m on the codend.

Or in Arabic it's...

سفينة له الوعاء الايجابى 1 متر, او 1 م فى ا عوام.

There are free translators online.

That French sentence is extremely awkward, like it was badly translated from another language. For example "assiette" is plate and "cul" is a not so nice term for a human rear end.

Yes. Google translation says...

A ship has a positive plate of 1 m, or is 1 m on the a$$.