Such a hard-to-reach shipyard...

I'm playing my 7th single-player map, and it's the same old story – you can't build a shipyard in any of the castles because the water is too far away. It's easier to find the Tears of Ashi than a map where the castle is close enough to the water...

Guys, I'm asking – can you suggest a couple of map names where you can build a shipyard in a castle?