Drilling vessel

A drilling vessel comprising:

• a drilling tower having a firing line, along which a tubular string is passed into the sea during drilling activities, the firing line extending in a substantially vertical direction;
• and
• a tubular string support structure, the support structure comprising:
• two parallel rails, which rails are provided on opposite sides of an elongated opening, wherein the firing line passes through said elongated opening between the rails;
• and
• two carts, each cart having a hanger body, which hanger body defines a vertical passage adapted to receive a tubular string supported in the firing line, and which hanger body defines a lateral passage, in communication with said vertical passage, allowing to place the tubular string in and remove the tubular string from said vertical passage,
• wherein the carts are each supported by the parallel rails such that each cart can be moved between a central support position, above the elongated opening with the firing line passing through the vertical passage, and a secondary position above the elongated opening with the firing line passing outside the vertical passage, and
• wherein, when both carts are located in their secondary position, the carts are located on opposite sides of the firing line, such that between the carts there is a passage for passing through large objects along the firing line.