Definition(s)
Positional Mooring
Anchoring system for position keeping at the unit’s working location prompt and thorough repair a permanent repair completed at the time of survey to the satisfaction of the surveyor, therein removing the need for the imposition of any associated condition of class.
Source: Rules for Classification – Offshore units, DNVGL-OU-0101, Offshore drilling and support units, DNV GL, July 2015. Global Standards
Positional Mooring
Station-keeping by means of multi-leg mooring systems with or without thruster assistance.
Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 1, Regulations, June 2013, Lloyd’s Register, Global Standards
Positional Mooring
Station-keeping by means of multi-leg mooring system with or without thruster-assist. The positional mooring system will consist of the following components, as relevant:
- Anchor points:
• Drag embedment anchors.
• Anchor piles.
• Suction anchor piles.
• Gravity anchors.
• Plate anchors.
2. Anchor lines.
3. Anchor line fittings:
• Shackles.
• Connecting links/plates.
• Wire rope terminations.
• Clump weights.
• Quick release devices, etc.
4. Fairleads/bending shoes.
5. Chain or wire rope stoppers.
6. Winches or windlasses.
Where applicable, the structural or mechanical connection of these items to the unit is also considered to be part of the positional mooring system.
Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 3, Functional Unit Types and Special Features, June 2013, Lloyd’s Register, Global Standards