50hp to 60hp how much faster

[Magella]

Am looking at upgrading my2 year old 50hp honda to a 60hp yamaha 4St and was just wondering if anyone would tell me how much more speed if any I could expect from the extra 10 hp.
My boat is a 4.5 blue fin Predator and I know the 60 is about 10kg lighter than the 50.

Thanks Foxie

[Dan5]

Mate i've got a yammie 60 4strk on my warrior i get 32kts with the standard prop 13p i think and cruise speed is 22/23 kts.So just compare those figures to yours for a rough guide.These figures are with 2 people, full tank ,extra 20l tank,fishing gear esky etc.Dan..........

[FNQCairns]

Mate i've got a yammie 60 4strk on my warrior i get 32kts with the standard prop 13p i think and cruise speed is 22/23 kts.So just compare those figures to yours for a rough guide.These figures are with 2 people, full tank ,extra 20l tank,fishing gear esky etc.Dan..........

and no fish LOL