Fire & Rescue NSW personnel are seen at Apple Tree Bay boat ramp, near Bobbin Head, New South Wales, on Tuesday, Jan. 2, 2018. n accident investigator says the wreckage of a seaplane that crashed in a river north of Sydney will be raised this week. But investigators have offered no clues to the cause of the crash that killed the Canadian pilot and his five British passengers. (Mick Tsikas/AAP Images via AP)