Originally Posted by Faster
Here's Hunters explanation for the 260..
Mistress of Grand Traverse
But realistically I think the major benefit is the ability to shed the ballast weight for trailing. Water ballasted Ocean racers carry the water ballast outboard under the gunwales, on very beamy boats. This can equate to several bodies 'on the rail', as is typical of crewed yachts.
I agree and I don't think it is nearly as effective as a denser material. It is used purely to be able to lower the tow-able weight of the boat. They use some really dense and heavy materials like depleted uranium in the bulbs of racing boats correct? So water is not going to have nearly the affect of a more dense material. Even concrete would be more effective but of course it does not flow out well after it sets!
One thing on water ballasts on racing boats is that they can move it from one side to another so as to effect trim. I once saw a guy at a launching ramp explaining to the guy next to him how superior the water ballasts he said just like the racing boats use.