largest power boat to use foam

what is the largest powered boat to use foam inside a double hull?

thanks in advance.

 

The length of a vessel in any way limits or determines the material used to construct the hull. However, depending on the ship´s length a material can be more appropriate than other.

 

"foam inside a double hull" = foam sandwich ?

 

Boston Whaler 370 Outrage - Power And Motoryacht
www.powerandmotoryacht.com/boats/boston-whaler-370-outrage
At just over 37 feet, the 370 Outrage is the largest boat Boston Whaler has built in its more than 50-year history. The patented Unibond construction method has been a feature of all of its boats, and the 370 is no exception.

 

The Westport 164' is a foam cored hull and deck, as is the Christensen 164. I have a vague idea there were a series of Dutch built Minesweepers around 180' that are foam cored glass.

 

sorry not as efficient as you