The MV-22 Osprey is a tilt-rotor aircraft, capable of carrying 24 people at a time in addition to four crew members.
Twenty-three marines were rescued while three remain missing.
U.S. forces were in Australia for Talisman Saber, a joint military exercise involving 33,000 U.S. and Australian troops which is held each two years.
"I have briefed Prime Minister Turnbull and spoken with Secretary Mattis this evening to offer Australia's support in anyway that can be of assistance", she said.
"The ship's small boats and aircraft immediately responded in the search-and-rescue efforts", the statement added.
The MV-22 is a hybrid-type aircraft that can take off and land as a helicopter but transition its two engines to fly like an airplane in mid-flight.
British model drugged, stuffed in bag and 'auctioned as sex slave'
Police said no one took part in auction and it was unclear if Herba was serious about the plan or whether he was a "fantasist". Her kidnapper allegedly threatened to auction her on the internet while trying to extort €300,000 (£270,000) from her agent.
In a statement, the US Marine Corps Public Affairs Office said there had been a "mishap".
"The exercise was to prove (Australian personnel) could operate a broad a range of aircraft", commander Adrian Capner said.
Reports indicate 23 people will be rushed to the Hospital, with reports three people are still missing and are feared dead.
"It shows we are capable of interacting with our coalition partners, particularly the United States".
'Our thoughts are with the crew and families affected'. In mid-July, 15 Marines died and one Navy corpsman was killed when their military plane crashed in a MS field.
The 31st MEU - based out of Okinawa, Japan - is composed of roughly 2,200 Marines and U.S. Navy sailors. And in January, three USA soldiers were wounded in the "hard landing" of an Osprey in Yemen.