DSV SEAWAY OSPREY – ELVE 9

 

 

Period O/B

:

September 1996 – November 1996.

Function O/B

:

Electronic Radio Officer & DP / Vessel Control Specialist.

 

The Seaway Osprey is a 100m class, diving support, construction ship with an established record of safe and effective operations.

 

With impressive stationkeeping and high stability the Seaway Osprey has the highest possible rating for rough weather operations. All types of subsea construction, inspection, repair and maintenance works have been successfully completed with the ship.

 

The Seaway Osprey is designed to perform various subsea work tasks.

 

The vessel is equipped with diesel electric propulsion with full redundancy throughout, so that no single failure of a main component will disable the ship.

 

This ensures that the ship can always remain in position and safely recover and support the divers should failure of a main component occur.

 

 

General Specifications

 

Length overall                             

 101.70

mtr

LOA incl. stern support beams

 105.45

mtr

Breadth incl. sponsons

   21.62

mtr

Draft (Hull)

     5.75

mtr

Deadweight

3104.1

T

Callsign

ELVE 9

Port of Registry / Flag

Monrovia, Liberia

 

 

   CLASSIFICATION:

   Hull and Machinery: DNV + 1A1, DSV, ISF & IIISF DYNPOS AUTRO, SF, EO (ERN 99.99.99)

 

   DYNAMIC POSITIONING:

   Kongsberg- Simrad Class III SDP 21 & SDP 11

 

   DP REFERENCE SYSTEMS:

   Hipap 500 with Slave system

   Hipap 350

   DGPS Systems

   Light Weight Taut Wire, Bandak Mk 12a

   Moon Pool Taut Wire, Eiken

   Fan Beam

   Artemis

 

   DP SENSORS:

   3 Gyro´s

   3 MRU-s

   3 Wind Sensors

 

   SURVEY SYSTEMS:

   Navipac, Survey Computer

   DGPS

   Hipap 500

   Hipap 350

   Seapath 200

   Gyro

 

   DECK AREA:

   The free area of the working deck is approximately 1100m2.

   About 900m2 is reinforced to carry 5Ton/m2.

 

   CRANES:

 

   1 x Hydramarine Offshore Crane:

Main hoist                             

Single fall      75  T

Double fall   150 T

@  2000 mtr depth

@  1000 mtr depth

Whip line

Single fall      20  T

@  2000 mtr depth

   Both main hoist and whip line are active heave compensated.

 

   1 x Hydralift Offshore Crane:

Main hoist                             

                      40 T

@   400 mtr depth

Whip line

                        5 T

@   400 mtr depth

  

   These two cranes can be operated simultaneously for installation of spoolpieces etc.

 

   ACCOMMODATION:

   Certified for 102 persons plus divers in saturation:

   3 suites, 9 single cabins, 36 double cabins, 5 four-berth cabins.

 

   HELICOPTER DECK:

   Complies with civil aviation rules, suitable for Sikorsky or similar helicopters.

 

Diving Specifications

 

   SATURATION DIVING SYSTEM:

   The 18-men Saturation Diving System is rated to 360 MSW (16 men to 450 MSW) and utilises 2

   large 3-man diving bells deployed through separate moon pools.

   The bells are mounted on two separate transfer chambers, allowing for efficient split-level diving.

 

   GAS RECLAIM:

   A gas reclaim system for both chamber and bell-diver gas is installed.

 

   GAS STORAGE:

   Permanent storage for 18,000m3 of gas is provided below deck.

 

   MIX-MAKER:

   A Gyro Star mix-maker is fitted for on-board preparation of requisite gas mix.

 

   MONITORING:

   Online diving monitoring system.

 

   COMMUNICATION:

   A current loop technology communication system permits exceptionally good communication under

   hyperbaric conditions.