Naval Tokens

By Green Raven, in Battle for Rokugan

Can I use Naval Tokens to attack even if I dont own any coastal terretories?

The rulebook isnt clear on this but it seems thematically wrong...

Page 8 - You can place a naval token on any coastal border. I'd argue that's pretty clear.

Thematically, you may have hired ronin sailors that turn, or maybe your navy was still out when you lost your coastal province? Just thinking out loud.