Helsinki: A thin layer of ice covers the teak wood deck of the cruise ship the Oasis of the Seas at the moment. But the cold weather is just one of the challenges a visitor will need to overcome if they want to visit the vessel: tins of paint are everywhere and sheets of tarpaulin make walking around the ship difficult.

By the start of November the flagship of the cruise company Royal Caribbean International (RCI) should be ready to set sail. When that day arrives the world will have a few more superlatives: never before has there been a cruise ship as large and as expensive to build as the Oasis. Right now construction and fitting out of the $1.4 billion vessel is underway at the Aker shipyard in Turku, Finland.

Over 2,000 people are working on the 360-metre-long and 71-metre-wide ship. All of them are wearing blue overalls and helmets - a few are even jogging around. "It's as busy here as a freeway in Miami," says RCI spokeswoman Elisabetta Raffo. "But we are well on schedule."

The Oasis is due to be christened in Fort Lauderdale Nov 30. On Dec 1 it will begin its maiden voyage to the Caribbean. Some of the islands in the Caribbean are quite small - too small almost when you know the ship can take up to 6,296 passengers and 2,160 crew.

That explains why the Oasis will only make three visits during its seven day cruise to St. Thomas, St. Maarten and Nassau in the Bahamas. The four day voyage will go to the Royal Caribbean port resort of Labadee on Haiti.

"They are building new passenger terminals in the harbours so we won't have to go through customs on board the ships in future," says hotel director Raimund Gschaider.

Luckily there is no pressing need to go on land as the Oasis of the Seas has plenty on offer and a week on board may end up passing by too quickly. Although not every guest will want to try out one of the ship's two climbing walls, hang from a zip-line over the boardwalk or go ice skating, many will certainly be taking advantage of the pool and bar areas.