Seven Polaris
- 1. The Seven Polaris is the ideal barge for pipelay and heavy lift activities in deepwater fields, offering IMO Class 3 dynamic positioning. • Length 137m x breadth 39m • S-lay 136t up to 60-inch pipe diameter • Main crane 1,440t • Accommodation for 262 persons • 2 x workclass ROVs seabed-to-surface Type: Pipelay / Heavy Lift Classification: Bureau Veritas (BV) Seven Polaris
- 2. www.subsea7.com © Subsea 7, 2012. Information correct at time of going to press. August2012 Seven Polaris General Description Type Pipelay / Heavy Lift Classification Bureau Veritas (BV) Flag Panamanian Year Built 1979 Principal Dimensions Length Overall (m) 137.16m (hull) Breadth (m) 39.01m Depth Main Deck (m) 9.14m Operating Draft (m) 5.85m Operating DP water depth 15m Operating anchor water depth 10m Gross Tonnage (t) 16,455t Transit Speed (knots) Maximum: 7.5 knots Operational: 5.5 knots Endurance (days) 365 days. All provisions, stores, equipment, fuel, etc received while offshore from supply vessels DP System DP Classification Dynamic Positioning Class 3 Reference System 2 x DGPS, Fan Beam, 2 High Precision Acoustic Positioning HiPAP, light weight taut wire Power and Propulsion Main Engines Number 4 Type ULSTEIN BERGEN BRM - 8 Power (hp) 4,740 at 750 RPM Generators Number 3 x Wartsila Type Model 9 L 20 Power (kW) 1,987kVA each at 900 RPM Number 2 x Caterpillar Type Model 3516 TA Power (kW) 1,800kVA at 1800 RPM Number 1 x Wartsila Emergency generator Type Model UD 25V12 S5D Power (kW) 800kVA at 1200 RPM Thrusters Number 4 x ULSTEIN BERGEN (variable pitch) Type TCNS 120/85 - 280 Power (hp) 4,023/thruster Location 2 foward, 2 aft Number 2 x ULSTEIN propeller (fixed pitch) Type 800 TM Power (hp) 2,279 at 892 RPM/thruster Location 1 foward tunnel, 1 aft tunnel Main Deck Clear Deck Area (m²) 900m² on PS, 500m² on SB Deck Strength (t/m²) 7.35t/m² Capacities Fuel Oil (m³) 3,217m³ Fresh Water (m³) 1,684m³ 2 reverse osmosis units, 100m³/day Accommodation Berths (No.) 262 (lsa) Cabins (No.) 28 x double cabins 56 x four man cabins Helideck Type Maximum D value: 18.95 mtow = 9.3t Designed for Sikorsky S61 Helicopters Cranes Main Crane Capacity (t) Main hook 1,440t @ 30.5m special lift, 1,100t @ 36m radius Manufacturer Clyde Location Stern of barge Main Crane Comments 2 x Manitowoc 555 Crawler Cranes Can be positioned on either side of barge if needed Auxiliary Crane Capacity (t) 61t at 7.3m Location Port side, 1 forward, 1 aft Auxiliary Crane Comments Certified for man riding up to 1,500kg Pipelaying System Rigid Lay S-Lay S-Lay: Max Tension (t) 136t Tensioners (No. and type) 2 x Westech LPT 150 Upgraded in 2008 Pipe Range (inches) 6-inch to 60-inch, 12m long Storage Capacity (t) Varies depending on pipe outside diameter Welding Stations (No.) 4 Stinger (m) 1 x Steep S Stinger - 64.5m long 1 x Shallow Water Stinger - 34m long Operating Water Depth (m) Shallow Water Stinger - 10m to 200m, Deep Water Stinger - 200m to 1,800m A&R Capacity (t) Drum 1,900m, 2.5-inch wire, 140t on last layer ROV System ROVs (No. and type) 2 x SCV3000 Operating Depth Rating (m) 3,000m