The Fehmarnbelt tunnel project has welcomed its latest addition to the marine fleet with the introduction of ‘Ivy,’ a vessel designed specifically for transporting and immersing the massive tunnel elements that will form the backbone of the undersea link.

Deme Group

Source: Deme Group

Ivy, consisting of two custom-built immersion pontoons, boasts impressive specifications. At 100 m in length and 45 m wide, it has a lifting capacity of 8,000 tonnes and is equipped with 66 winches. The vessel can carry a crew of 22 as it supports the tunnel’s construction.

Currently in the final stages of commissioning and undergoing offshore trials, Ivy is being prepared for the crucial immersion phase.

The Deme team leads marine operations as part of the Femern Link Contractors consortium overseeing the tunnel’s construction.

Once fully operational, ‘Ivy’ will assist in the transport and placement of the tunnel’s 89 giant elements. In total, four custom-built pontoons will be utilised in the project. Earlier this year, ‘Maya,’ a multipurpose pontoon, joined the fleet to install the gravel bed in the tunnel trench, further advancing the historic construction effort.

The Fehmarnbelt tunnel, upon completion, will create a direct link between Denmark and Germany.