Download Seven Discovery

Seven
Discovery
Diving
The Seven Discovery is a diving and construction vessel.
• Length 125m x breadth 20m
• 18-man twin bell saturation diving system
• 140t main crane
• Deck area 1,200m2
• 1,600t below deck storage carousel
• Accommodation for 97 persons
• 1 x ROV
seabed-to-surface
Seven Discovery
General Information
TypeDiving
Classification
X 1A1 ICE-1C HELDK-SH E0
DSV-SAT POS CLE-2
Flag
Isle of Man
Year Built
1990
Accommodation
Berths (No.)
Principal Dimensions
Length Overall (m)
Breadth (m)
Depth Main Deck (m)
Operating Draft (m)
Gross Tonnage (t)
Transit Speed (knots)
Endurance (days)
Cabins (No.)
The DP system requires only two thrusters for DP Class II
operations and therefore the third thruster (bow and stern) is
regarded as spare.
Main Deck
Clear Deck Area (m²)
Deck Strength (t/m²)
1,200m² (excluding space taken
by ROV, crane, etc)
Variable 5t/m² - 8t/m²
Capacities
Fuel Oil (m³)
Fresh Water (m³)
Ballast Water (m³)
1,495m³
570.24m³
2,245m³
140t
Hydralift 350m (maximum)
Main deck, starboard side
70t winch and 8t winch
Auxiliary Crane Capacity (t) 10t
Location
Main deck starboard side
Auxiliary Crane Comments Hoisting height 400m
Moonpool
Moonpool (No.)
Pipelaying System
Flexible Lay:
Carousel (No.)
Carousel Capacity (t)
Reels Dive System
Men (No.)
Bells (No.)
Depth Rating (m)
Dive System Comments
2 x diving moonpools
1 x in cargo hold No. 2
1,600t
Facility exists, but none
permanently on board (subject to
vessel stability)
18
2, 1 x aft, 1 x forward
200msw Possible dive rating of 450msw
ROV System
ROVs (No. and type)
1 x observation ROV
(Seaeye Tiger 850)
Operating Depth Rating (m) 1,000m
ROV Comments
Depends on umbilical length
15
Thrusters
Number6
Type
3 x azimuth thrusters aft,
3 x tunnel thrusters forward
Power
Aft: 2,000kW, forward: 1,250kW
Cranes
Main Crane Capacity (t)
Manufacturer
Operating Water Depth (m)
Location
Main Crane Comments
20
Generators Number4
Type
Motors Alsthom, Type S 3 HX
7,1040 / 3,220kVA /6,000V
Power 8,243kW
EC225 (11t)
S92 (12t)
be
r
Power and Propulsion
Main Engines Number4
Type
2,430kW Wartsila Vasa type
6R32E four-stroke medium speed
engines (720 rpm)
Power
9,720kW Helideck
Type
ve
m
POS CLE-2
Taut Wire, HiPAP, DGPS,
MDL Fanbeam Mk 4.2
No
DP System
DP Classification
Reference System
124.7m (including helideck)
19.5m
11m
6.50m
8,248t
11 knots
95 days (depending on loading
conditions of vessel)
97 persons
(plus 18 divers in saturation)
'Project team numbers are
restricted to 50 due to the vessel
having SPS status. Further details
available if required’.
55
8 x 1 man en-suite on Bridge
5 x 1 man en-suite on Upper
24 x 2 man en-suite on Upper
18 x 2 man en-suite on
Forecastle
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© Subsea 7, 2015
Information correct at time of going to press