RV Sonne (2014)

The RV Sonne in Kiel in 2014.
History
Germany
Name	Sonne
Owner	Federal Ministry of Education and Research (Germany)
Operator	Briese Schiffahrts GmbH
Port of registry	Germany
Builder	Meyer Werft, Germany
Cost	€124.4 million
Laid down	12 April 2013
Launched	5 April 2014
Christened	11 July 2014
Acquired	17 November 2014
Homeport	Wilhelmshaven
Identification	IMO number: 9633927 MMSI number: 211627240 Callsign: DBBE
Status	Active as of 2018
General characteristics
Class and type	Research vessel
Tonnage	8,554 GT 2,566 NT
Length	118.42 m (388 ft 6 in)
Beam	20.6 m (67 ft 7 in)
Draft	6.4 m (21 ft 0 in)
Depth	9.8 m (32 ft 2 in)
Installed power	4 GenSets – Wärtsilä diesel engines each 1,620 kW / 1,572 ekW
Propulsion	2 diesel electric engines, each 2350 kW
Speed	15.0 knots (27.8 km/h)
Crew	35 + 40 scientists

RV Sonne (German for Sun) is a German deep ocean research vessel. The ship became available for science in December 2014 and it operates mainly in the Pacific and the Indian Oceans. She is registered in Wilhelmshaven and replaced its predecessor of the same name.

Career

An order worth €124.4 million for a new research ship to replace the older research ship Sonne was placed by the German federal ministry for education and research (90%) together with the coastal states Lower Saxony, Schleswig-Holstein, Mecklenburg-Vorpommern, Bremen and Hamburg (10%) in May 2011.

The construction took place in Meyer Werft in Papenburg and the Sonne left the dock in April 2014. It was christened in July 2014 and handed over in November 2014.

The Sonne is a multipurpose working platform for marine and related disciplines: physical and biological oceanography, marine geology, marine and atmospheric chemistry, marine geophysics and meteorology. The ship operates mainly in the Pacific and the Indian Oceans and is owned by the German Federal Ministry of Education and Research. It sails under the German Federal State Flag and its home institute is the Institute for Chemistry and Biology of the Marine Environment.

Equipment

RV Sonne is equipped to cover a wide spectrum of ocean research. An A-frame crane at the stern has a lifting capacity of 30 t. This can be used for deploying submersibles and other heavy equipment. Four cranes with a lifting capacity of 10 t and three small cranes (2 x 2 t and 1 x 0.5 t) allow the transport of research material across the ship. A winch enables deploying devices to the ocean floor to 12,000 m of water depth.

Some of the tasks of the RV Sonne are to conduct seabed surveys (bathymetry) with different high-precision echo-sounding systems and seismic surveys. These systems can be disturbed by air bubbles created near the water surface and/or along the hull and swept down under the arrays. To avoid this, a special hull form was designed and tested in water basins. A dent runs along both sides of the hull to guide water and bubbles behind the echo sounding arrays installed within an integrated gondola near the bow. Furthermore, the outer hull surface was kept as smooth as possible to prevent production of air bubbles through cavitation processes. Further the entire ship is tuned to reduce interference from intrinsic sound and a deployable stabilization system with active fins minimizes unwanted self-motion of the ship.

For troubleshooting during the scientific expeditions, the ship is equipped with several workshops: a deck workshop (for heavy mechanical work), an electronic workshop, a machinery workshop (for fine mechanical work) and an electric workshop.

Up to 25 twenty-foot ISO containers can be stored on board (4 of them inside). There are 550 m² of scientific laboratories.

External links

• Sonne homepage
• Sonne Archived 2019-07-15 at the Wayback Machine (by German Marine Research Consortium)
• Cruise reports Sonne (list of all cruises with links to cruise reports and data)
• Sonne, University of Oldenburg
• Pictures: [1] [2] [3] [4] [5] [6]