It was HMAS Australia. The 2 biplanes used were built by T.O.M. Sopwith.a platform was built on the fwd gun to facilitate the launch. The launches were successful
Sopwith was also famous for his Americas Cup challenges in J class yachts ,the biggest yachts to ever sail in cup races
Sopwith was also famous for his Americas Cup challenges in J class yachts ,the biggest yachts to ever sail in cup races