Petter Martin Mattias Koch Sørlle was born at Tune (now Sarpsborg) in Østfold, Norway. Both his father and grand-father had been sailors. He was engaged in whaling from Vestfold and later participated in Antarctica whaling near the South Georgia Island and South Orkney Islands.
He invented slipways for whaling ships which he patented in 1922. His invention was a device by which the whale could be fully drawn to the ship. The pickup slip was first used in the Antarctic Ocean by the whaling company Globus of Larvik on-board the FLK Lancing during the season 1925-26. 
- Bjørn L. Basberg. "Petter Sørlle". Norsk biografisk leksikon. Retrieved December 15, 2016.
- "Petter Sørlle". polarhistorie.no. Retrieved December 15, 2016.
- "1925 DS/FLK Lancing". lardex.net. Retrieved January 1, 2018.
- R.K. Headland. "Whaling Stations: Stromness". South Georgia & the South Sandwich Islands. Retrieved January 1, 2018.
- "Petter Sørlle". Store norske leksikon. Retrieved January 1, 2018.
- Næss, Øyvind (1951) Hvalfangerselskapet Globus A/S 1925-1950 : et kapitel av den moderne hvalfangsts historie (Larvik: Hvalfangerselskapet Globus)
- Tønnessen, Joh N.; & Johnsen, Arne Odd (1982). The History of Modern Whaling. (University of California Press). ISBN 0520039734.CS1 maint: Uses authors parameter (link)
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