HMS Invincible

The HMS Invincible is a level 81 Boss Ship-of-the-Line. It is only encounted so far in Royal Navy Expedition Fleets, along with Navy Elites. It attacks with Firebrand for Cannons and Explosive for Broadsides.

Trivia
The Invincible actually has the title HMS instead of Navy infront of it, unlike other Royal Navy ships.