Rescue teams in Fremantle are searching for four men who have been missing at sea for two days

WA Police are looking for this boat and its crew. Picture: Supplied

A sea and air search is under way for four men who failed to return from a fishing trip off Fremantle on Wednesday night.

The men are from the same family and left Woodman Point near Fremantle in a 5.5-metre boat to go fishing off Rottnest Island.

The men were due back Thursday. Their names have not been released yet, but police confirm the 50-year-old owner of the boat is from the Perth suburb of Coodanup.

With him are his brother, his 24-year-old son and another 31-year-old family member.

The family contacted police at 9pm yesterday. The owner’s vehicle and boat trailer are still at the boat ramp at Woodman Point.

A strong wind warning was issued for the area on Wednesday night, and gusts around Rottnest Island reached 54km/h, according to the Bureau of Meteorology.

Nine search and rescue crews, three helicopters and an Australian Maritime Safety Authority jet aircraft have been searching the area since 10.30pm Wednesday night:

The ABC reports no emergency calls have been received from any of the men, and no calls to them have been answered.

Water Police are asking anyone who might have seen a white 5.5m boat in the area in the past two days to contact them immediately. Their number is (08) 9442 8600.