The RAAF's first boats were obtained in 1921 to support the Fairey III seaplanes based at RAAF Base Point Cook. The RAAF Maritime Section was massively expanded during World War II and at its peak the Section operated over 600 powered and 700 unpowered craft (including several sailing vessels). While many of these craft were ex-civilian fishing boats, the RAAF also purchased a number of specialised craft. Small maritime sections were established at many RAAF bases in Australia and the South West Pacific and were administered by the units they supported. Most training for RAAF crews was undertaken at RAAF Base Rathmines in New South Wales.