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.
NorwaySjøforklaring Sigurd Jarl
https://www.digitalarkivet.no/census/person/pf01037426036912
AV/SAT-A-4709/2/1/1c/L0022, Trondheim sjømannskontor