Board Thread:Lore Discussion/@comment-25296253-20140818232417/@comment-10993011-20140820235254

From what we see in Skyrim, the province doesn't appear to have much of a navy. I think it can be assumed that Cyrodiil, the Summerset Isle, Hammerfell, and High Rock have the strongest navies.

Thinking about how Redguards are known for sailing and Iliac Bay hold coastal powerhouses in both Hammerfell and High Rock, it would be unbelievable if kingdoms in the Bay hold no navy.

Cyrodiil great natural spots near the Imperial City and Anvil, and the simple fact that the Summerset Isle is an extremely ancient and island kingdom, we can assume they have navy. In fact, by the time of the events of Skyrim, they may just have most powerful.