The last time Gerrit De Graaf visited Helderline.nl was more than 6 years ago.
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Gerrit De Graaf wrote 1 message(s) in the guestbook.
Gerrit De Graaf sailed on the following 10 Shell tanker(s).
There are 360 collegues who sailed on the same Shell tankers as Gerrit De Graaf between 1967 and 1974.