Best ship setup to beat Kraken?

[Warspite]

Hi, lets discuss what is the best setup of the sailboat to beat the kraken. Lets assume we have already big ship. I am wondering if cannot barrage can be used, or rather barrels, birds. And if the strange harpoon cannon is worth to take.

[Warspite]

So I beat it with the sailboat I get from Blue hard battle. It has torpedo, shield and 2xS, 3xL. I put there just 3 magma cannons. Small slots have no windows so nothing really useful was there.