Submerged CALM buoy
US5816183A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Mar 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63B22/021
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A Catenary Anchor Leg Mooring (CALM) buoy (1) comprises a body (2) with buoyancy, elements (3) for connecting the buoyant body to catenary anchor chains to anchor the body to the seabed, a turntable (5) rotatable elements with respect to the body with buoyancy. The turntable has devices (6, 6') for a floating unit such as a vessel, a swivel and elements for connecting at least one hose (8, 8') between at least one swivel and a submerged pipe structure extending over or into the seabed to any subsea well or the like, as well as elements for connecting at least one hose (9) between at least one swivel and at least one vessel (7), wherein the CALM buoy is provided with catenary anchor chains (4) which have a weight such that the CALM buoy as a whole is kept underwater at least during normal practice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.