On June 1st, 1639

Maarten Tromp recorded in his journal on June 1st, 1639, that A man was "dunked three times from the yard-arm and whipped with a wet bum before the mast", as he had deserted from Captain "Potbreecker's" ship. The man's name was Jan Janszoon of Edenburch (Edinburgh?). Apparently, desertion was a problem, and there are others who were punished, as well. So was Captain Potbreecker actually Captain Vlieger? This is based on the account in Charles R. Boxer's book The Journal of Maarten Harpertszoon Tromp Anno 1639 (1930).