[1] On 13 August 1940, he tried to hijack the Scheveningen logger SCH 107 to sail to England, along with Erik Michielsen and Carel Kranenburg.
He then arranged to be picked up on the Tjeukemeer in Friesland by an RAF seaplane on 13 October, with Marion Smit, Hans Hers, Lodewijk van Hamel and Lourens Baas Becking.
The plane managed to take off again and escape, but the resistance fighters were arrested and transferred to the detention center in Leeuwarden, and from there to the Oranjehotel.
On 5 June 1943, Mesritz was transferred to the Vught concentration camp, where he meets Professor Cleveringa, with whom he was imprisoned in the Oranjehotel, and is able to help him a little.
[6] In the film Soldier of Orange, the role of Jean Mesritz is played by Huib Rooymans.