Hello.

Certo and Furulund is the same ship.
Certo own by Stolt Nielsen, Haugesund and was solt january 1916 to Wildgard in Sandefjord and renamed Furulund.
I have one bad pictures of Certo and I will tray
to find some pictures of the three others Norwegian ship.

There was also one ship sunk in this area with name
Furuland 1817 brt.
owner, S.Ugelstad, she sunk November 7th, 1916.

Best regards.
Řistein.