A ship.

S/V Ocean Surveyor is a 38-meter long and 12-meter wide fiberglass catamaran designed for oceanic voyages.

Photo: Carl-Erik Alnavik/SGU

SGU's research vessels

Using our specialized vessels Ocean Surveyor and Ugglan, we survey the geology of the seafloor to obtain a picture of the rock and soil beneath the ocean surface. We also take sediment samples to determine the distribution of environmentally hazardous substances.

Ocean Surveyor

S/V Ocean Surveyor is a 38-meter long and 12-meter wide fiberglass catamaran designed for oceanic voyages. It has a clearance height of 21 meters and a draft of 3.4 meters. The vessel accommodates 15 sleeping berths distributed among 12 cabins, as well as a sickbay with two beds. The mess hall has 16 seats and also functions as a meeting room. The day room is equipped with a small library and a TV. The ship's life-saving equipment is designed for 25 people.

The vessel is self-sufficient in freshwater. It also has large tanks that, along with the well-equipped galley, enable long voyages.

The vessel's control system is equipped with a technology called dynamic positioning (DP). With the satellite-based positioning equipment, two side thrusters on each side, and two stern thrusters, the vessel can automatically and accurately maintain a stationary position or follow a pre-set course with a precision of centimeters.

The vessel is equipped with several fixed survey systems, such as single- and multibeam echo sounders, sediment echo sounder, side-scan sonar, multichannel seismic, sound velocity profiler, current meters, and oxygen sensors. A 50-square-meter space for controlling the survey systems, data processing and interpretation, and data storage is directly connected to the command bridge.

The vessel has a large aft main deck with multiple winches, cranes, an aft frame, and a so-called moon pool in the main deck, from which various sampling devices and underwater cameras can be deployed.

Two laboratory spaces are available on board, a wet lab for sediment and environmental sample analysis, and a dry lab space equipped with a gamma spectrometer and sediment X-ray for detailed sample studies.

Ocean Surveyor_627x392.jpg

S/V Ocean Surveyor is a 38-meter long and 12-meter wide fiberglass catamaran designed for oceanic voyages.

Photo: Björn Bergman, SGU

Ugglan

S/V Ugglan is an aluminum research boat with a length of 8 meters, width of 3 meters, a freeboard of 3 meters, and a draft of 0.7 meters. It is transported on top of S/V Ocean Surveyor when not in use. Propulsion is provided by a water jet unit, allowing for a maximum cruising speed of around 25 knots. The cabin accommodates two seats and a workstation for computers and the electronic components of the measurement equipment. A self-inflating life raft is located on the cabin roof.

Satellite-based positioning is used for navigation. The boat is also equipped with radar and an AIS system to aid navigation in poor visibility conditions.

The boat is equipped with several fixed measurement systems, such as multibeam echo sounders, boomer seismic, parametric sediment echo sounder, single-beam echo sounder, and sound velocity profiler.

Sampling, such as grab sampling and coring, is performed on the foredeck using a crane with an electric winch. The equipment also includes an underwater camera.

Last reviewed 2023-06-12