Ship speeds

Is there any info on ship speeds, with the effect of the different attribute upgrades? I'd like to use this to optimize my trade routes. Now it only says slow or very fast. I found the post on distances already.
https://piratesglory.com/forums/
Lordrudolf wrote:Is there any info on ship speeds, with the effect of the different attribute upgrades? I'd like to use this to optimize my trade routes. Now it only says slow or very fast. I found the post on distances already.
Initial Ship Speed = Base Ship Speed + ( Base Ship Speed * 3 * Cotton Sails / 100 )
Ship speed = Initial Ship Speed * ((Current Crew / Max Crew) + 1) / 2
Final Ship Speed = Ship Speed + (Ship Speed * Double Hammocks / 100)