In 1997, Australia signed an $A 667 million contract with Kaman to purchase 11 upgraded SH-2G (A) "Super Seasprites," with modernized avionics. This compact helicopter design was thought to be well suited to operation from the RAN's ANZAC Class frigates, and even from patrol boats with helicopter decks. The first helicopter was unveiled in 2003, but by 2005 up to 40 deficiencies had been identified including inability to operate in bad weather and low-light conditions, and inability to meet Australian airworthiness certification standards. Placing modern avionics into a 1960s airframe proved challenging indeed; the helicopters were restricted to "passenger and supply transport in good weather" in 2005, then grounded in May 2006.