The information on registered seafarers is not in all cases complete. As new sources are studied, information on engagements and medals etc. will be added to some of the already registered seafarers.
SwedenLondonregisteret:
Registernummer under krigen: London 79833.
Ifølge London-kort, var Petterson registrert i mannskapsliste for D/S Harpefjell 31. desember 1944.
RA/S-2081/F/Fe/Feb/L0022