 SSCV Thialf in a Norwegian fjord
| |
| History | |
|---|---|
| Name | SSCV Thialf |
| Namesake | Thialfi (Norse servant of Thor)[1] |
| Operator | Heerema Marine Contractors |
| Builder | Mitsui Engineering & Shipbuilding[2] |
| Identification |
|
| Status | In service |
| General characteristics | |
| Class & type | Semi-submersible crane vessel |
| Tonnage | |
| Displacement | 198,750 t max |
| Length | 201.6 m (661 ft 5 in) |
| Beam | 88.4 m (290 ft 0 in) |
| Height | 144.0 m (472 ft 5 in) crane |
| Draft | 31.6 m (103 ft 8 in) max |
| Depth | 49.5 m (162 ft 5 in) |
| Propulsion | 6 × 5,500 kW retractable azimuthing thrusters |
| Complement | 736 berths |
SSCV Thialf is a huge semi-submersible crane vessel operated by the Netherlands-based Heerema Marine Contractors; it was the largest crane vessel in the world until the SSCV Sleipnir became the largest in 2019.
The ship was constructed in 1985 as DB-102 for McDermott International by Mitsui Engineering & Shipbuilding Co., Ltd. In 1997, it was taken over by Heerema Marine Contractors after discontinuation of their joint venture with McDermott, HeereMac, and renamed Thialf.
The Thialf has two cranes with a combined maximum lifting capacity of 14,200 metric tons (14,000 long tons; 15,700 short tons).[4]
It is equipped with a class III dynamic positioning system. Propulsion and position keeping is by six 5,500-kW retractable azimuthing thrusters. For shallow waters, there are 12 Flipper Delta anchors at 22.5 t, with 2,500 meters (8,200 ft), 80 mm mooring wire.
The hull consists of two pontoons with four columns each. Transit draft is about 12 meters (39 ft). For lifting operations, it is normally ballasted down to 26.6 m (87 ft 3 in). This way the pontoons (with a draft of 13.6 m, 44 ft 7 in) are well submerged to reduce the effect of waves and swell.
It is able to accommodate 736 people.
Its lightship weight is 72,484 t.
