"We are asking for people in the area to keep a lookout and notify us with any information", says Joakim Sande, CEO of Solo, the Norwegian soft drink that is behind the project.
"As soon as the bottle drifts ashore and the finder gives us a call, we will come right down and throw him or her a celebration party", says Sande.
All kinds of security measures have been taken to ensure that the bottle will not be of danger to others at sea. It has AIS, navigation lights and is built in radar reflecting material that cannot sink.
If you have any relevant info about the bottle's whereabouts please call +47 22069480 or notify Solo on their Facebook page.
"It has been one week since the last position relay. Now we hope to hear back from passing ships or someone spotting it from the air – or indeed if someone should find a big yellow bottle on their local beach", says Sande.
* The world's largest message-in-a-bottle was launched five months ago and was consequently voted the world's best PR-stunt by adsoftheworld.com in April. It was expected to cross the Atlantic in about 70 days, but has taken its time - more than 150 days have passed so far.