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.
NorwayMinnehallen:
«Petter Jakob Selmer Olsen var påmønstret DS. Wyvern da han omkom ved en ulykke 17. mai 1942 under skipets opphold i Massawa».
Folketelling 1920 for 1001 Kristiansand kjøpstad, digitalarkivet.no
"Seilas for frihet: krigsseilernes loggbok", Fædrelandsvennen, 1985, s. 285.