Complex sentence: Proposals also were made for Eritrea and Ethiopia to divide the ships, with ships manned by both countries operating from Eritrean ports as a kind of successor to the Ethiopian Navy, but Eritrea soon expressed a desire to organize an entirely separate Eritrean Navy.
Split into simpler sentences: Proposals also were made for Eritrea and Ethiopia to divide the ships, with ships manned by both countries operating from Eritrean ports as a kind of successor to the Ethiopian Navy. But Eritrea soon expressed a desire to organize an entirely separate Eritrean Navy.