Hey there! We're working on naval battles now. The update is coming soon. Watch the video.
https://youtu.be/4vLmZf32ydk
Trireme has two sides of paddles. Each side can row forward, row back or not row. Player controls both sides with arrows on keyboard.
Also, there is a ramp, wich computes its position using locations of two boats.
There is still a lot of work ahead. Thank you for your support.