VAN OVERBOARD: Roofliss the amphibian van during the attempt to cross Cook Strait.

Two men's attempt to cross Cook Strait in a van has ended successfully.

Aeronautic machinists Adam Turnbull and Dan Melling made the news late last month after converting their Toyota van - called "Roofliss" - into an amphibian vessel.

The two left Waikawa marina under the shroud of darkness at 6am, heading out toward the northern entrance of the Marlborough Sounds.

DEREK FLYNN/Marlborough Express VAN-CY A TRIP: The two men left Waikawa marina under the shroud of darkness at 6am, heading out toward the northern entrance of the Marlborouh Sounds.

They entered Cook Strait at about 10.20am and decided to sail around the northern side of Mana Island on their approach to Wellington to avoid choppy conditions to the south.

They finally made landfall just before 4pm.

Conditions throughout the journey have been good, and the van was joined by several dolphins.

Supplied SEAWORTHY: Aeronautic machinists Adam Turnbull and Dan Melling have converted their van into an amphibious vessel and plan to cross Cook Strait.

Responding to earlier doubters about the viability of their attempt, Dan Melling said, "Not many people would have taken a van across the Strait, so until you do you don't know, do you?"

- with Stuff.co.nz

See the vehicle's last warm-up outing: