JOHANNESSEN of Fredrikstad

I am searching for any information on the following Johannessen's formerly of Fredrikstad, Norway. 1. Johan Emil Johannessen D.O.B. 1850 in Drammen. We know that Johan was a ships captain, the ship was wrecked and because it was a family business and no insurance, they lost everything. Any info on the name of the ship, where the wreck happened? 2. Son of Johan Emil was WILHELM CHRISTIAN JOHANNESSEN. He was also a captain of many ships out of Fredrikstad, they lived in the city close to the harbour I think in Queen Street? Wilhelm Christian was born 1895 and died in 1970. Is there any information on the ships he was captain of and any information on his travels. He had claimed to have shot a man in the USA and because he was a ships captain he was allowed a Gun for self defence, not sure when this would have happened. 3. Reidar Wilhelm Johannessen 1939 - 1992. Reidar apparently ran away to sea when he was a young teenager. He ended up jumping ship in Fremantle Australia in 1958 from the ship Anna Bakke. Any information on which ships he sailed on again out of Fredrikstad other than the Anna Bakke. Hope there is some more information out there somewhere!