Dutch sailor missing in the Atlantic

Superyacht Captains crossing the Atlantic are being asked to keep a sharp lookout for a Dutch sailor missing in the Atlantic.
Sietse Hagen left the port of Tenerife heading for the Caribbean isles on January 15th, 2014.
Since his departure, now over 60 days ago, he has not reported home. His friends and family, as well as the Dutch sailing community, are deeply concerned about the well-being of this very experienced sailor.
Sietse Hagen is sailing a 27ft Gib’Sea Flush Poker named Pokerface, small but well prepared for long voyages.
He carries no satphone or SSB radio. The boat is recognisable by its fixed spray hood and the black painted stern.
Sietse has been reported missing at the local and international authorities, but all help by keeping a lookout for his boat would be very much appreciated.

If superyacht crews have any information that could help finding Sietse they should contact The Netherlands Coastguard or a local police force.