A derivative of INCAT's long-running series of fast ferries, she's the USAV Spearhead (second of three built for US Armed Forces together with Bollinger Shipyard in Lousiana) - hull#61!
All-aluminum -
duh! -- she cruises above 50knots!
Interested, much more info here:
http://www.incat.com.au/defence_fs.html
Clearly, the technology is proven - if only in commercial & govt applications to date.