Deepwater Navigator

Deepwater Navigator

(ex. Peregrine VII, ex. Sedco 445) Drillship Conversion

Customers: Aker Rauma Offshore
Shipyard: Falcon Drilling Company

Main dimensions:

before / after conversion
LOA 136.07 / 167.73 m
Breadth 21.34 / 26.34 m
Draught 7.60 / 7.60 m
Depth 9.75 / 12.73 m
Main engine power 5 x 2270 kW / 8 x 2240 kW
Main screws 2 x 3175 kW / 2 x 3350 kW
Tunnel thruster 1 x 600 kW / 1 x 600 kW
Retractable thruster 10 x 600 kW / 10 x 600 kW
Azimuthing rectr. thrusters – / 4 x 1500 kW

Description of the conversion:

  • All main dimensions, length, breadth and depth increased.
  • New drilling equipment: drill floor, derrick, pipe handling and racking systems, etc.
  • Several other updatings in outfitting, accommodation, machinery and electric systems.

Commission:

  • On-site: Design coordination, Construction follow-up, Dynamic positioning calculations (thruster configuration studies, model tests & calculations, procurement of additional thrusters), Miscellaneous theoretical calculations (weight calc., seakeeping calc., outdocking studies, shadow diagrams for hydrophones), Steel design and strength calculations acc. to DNV rules and FEM (moonpool corners, pillars in the engine room), Interface drawings (deck equipment, drilling equipment, emergency generator room), Drill piping systems (part of basic design, detail design).
  • At Deltamarin: Weight calculations, Stability calculations, Inclining test, ERN calculations.
Jaakko Lappi
Sales
Tel. +358 9 4788 4424
Mobile +358 40 0807 587
jaakko.lappi@deltamarin.com
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