Some noteworthy small details in Dota about The Captain:
1. When Tidebringer is activated, its effect will not be lost after a last-hit on an allied creep, so the Captain has a strong advantage in last-hitting. [I believe most people already know this.]
2. Besides chaining with Torrent, the mark can also chain with Ghost Ship. So after marking, you can cast Ghost Ship first and then Torrent, which allows you to fully utilize the 1-second stun from Ghost Ship without wasting it. This sequence is better than using Torrent first and then Ghost Ship. However...