The Transportation Safety Board is hoping to recover electronic equipment that could establish the vessel’s location and condition when it capsized.

The TSB has said sightseeing passengers crowded the top deck of the vessel when it was hit by a wave and then rolled, sending people into the water.

“We know that most passengers and crew were on the top deck on the port side … this would have raised the centre of gravity, affecting the vessel’s stability,” Marc-Andre Poisson, the TSB’s director of marine investigations, said Tuesday.

“We also know that the sea conditions were such that the wave approached the vessel from the starboard quarter,” he said. “We know the vessel broached and then capsized.”

Members of the missing Australian man’s family arrived at an airport near Tofino on Wednesday but did not comment as they left in a waiting vehicle.

Trudi Castle said she and her sister are life-long city dwellers who are aware of the potential dangers in an urban environment though nature is supposed to be mostly peaceful.

“In nature you just have to be careful because there’s lots of things out of your control.”

The BC Coroners Service identified the five victims as Britons David Thomas, 50, and his 18 year-old son Stephen; Jack Slater, 76, a British national living in Toronto; Katie Taylor, a 29-year-old Briton living in Whistler, B.C., and 63-year-old Nigel Hooker of Southampton, England.