Other

Subsea 7 (com) Inc.

Michael Middel

David Lee Guymon

Jean-Pierre Branchut

Matthew McLean

Jeremy Welty

Makenna Ryan

System for determining relative positions and/or relative motions between objects (). Disclosed systems include a target tracking device () on a first object () and an optical target on a second object (). The target tracking device comprises a camera to take images of the optical targets which is configured to track the optical target. The system comprises an onshore crane (), a ship system (), an aviation system () or an offshore crane (). A controller () controls the crane, a ship () or a helicopter () using the data from the tracking device.

System and methods for determining relative position and relative motion of objects

Disclosed is a riser tower structure including a plurality of elongate objects. The riser tower structure is provided with blocks, preferably of buoyant material, along at least part of its length. The blocks provide the riser tower with a substantially circular cross-sectional profile, wherein one or more strakes are provided on the outside of the blocks. The strakes in a main embodiment are helical. Also disclosed is a corresponding method of constructing such a riser tower structure.

Hybrid riser towers and fabrication thereof

Growing community of inventors

Cypress, TX, United States of America

Michael Middel