Military drum ship

[Badnorth]

This ships use drums to make a rhythm while sailing to indicate when to row the paddles and give a signal to something In foggy spaces.
Aura: Drum beat ( affect ships )
Trained at : Towns, docks
Cost: 4
Hp: 20
Att: 0
Spd: 5
Armor: 0/4
Sight: 5
Mental resist: 40%
Bonuses:

[Midonik]

Doubt the drums could be heard inside the other boats, especially mid battle. Also not all ships even use oars.

[Endru1241]

i was thinking of some kind of commanding ship.
But more like flagship. In the original meaning of the word.
A ship, that signalled others using flags.
But that would just give high morale equivalent though.

[Morningwarrior]

What this doing,increase speed?armor?