Pictures and video supplied by Søren Larsen, a crew member of the Danish Coastal Rescue Service
A2Sea said no pollution had been detected leaking from the vessel and the company said it is hoping to remove all oils and fuels from the ship as soon as weather allows.
The vessel supplier is co-owned by developer Dong Energy and turbine manufacturer Siemens. Its CEO Jens Frederik Hansen said the incident is "under full investigation", adding that nothing like this had happened to the company before.
Sea Worker was being towed along the Danish coast from Frederikshavn to Esbjerg in preparation for deployment at the Gode Wind project for use as an accommodation platform. Dong told Windpower Offshore that it does not expect the incident to delay construction of the Gode Wind project.
There was no cargo on the vessel before the incident.
On the night of 26-27 January, the towline between the Sea Worker and the tugboat broke. It drifted and eventually grounded off the Danish coast, just south of Hvide Sande.The weather window for the transfer was shorter than expected.
The 15-strong crew was evacuated without injury and taken to a nearby hotel.
As a result of the grounding, A2Sea said the jacking system had been "seriously damaged" and that it was unable to move the vessel.
Due to further adverse weather overnight of 2-3 February, the vessel then capsized and turned upside-down.
Crews from A2Sea, external specialists, and the Danish Navy are monitoring the situation.
The Sea Worker vessel has previously been deployed at the 576MW Gwynt y Mor offshore project in the Irish Sea and the 400MW Anholt project in the Danish North Sea.
It is 55.5m in length, 32.20m wide and capable of rising some 40m above the water surface on 73 metre long legs when installing wind turbine components.
Below is footage from the Danish Coastal Rescue Service of the vessel following its capsizing courtesy of Søren Larsen: