Berlin-class (Type 702)

The Type 702 Berlin-class replenishment ship was designed for the German Navy to support United Nations overseas missions. The German Navy originally planned a fleet of these vessels in 1994, but later reduced the order. Flensburger Schiffbau-Gesellschaft built the hulls for the initial vessels, Lürssen installed the electronics, and Krögerwerft completed the superstructure, outfitting, and sea trials. The lead ship, Berlin, was ordered in 1996 and entered service in 2001. The second vessel, Frankfurt am Main, entered service in 2002. The third hull, Bonn, was ordered in 2008 to a modified design with increased power and accommodations, entering service in 2013. In 2013, the Royal Canadian Navy selected the Berlin-class design as the basis for its Joint Support Ship Project to replace retired Protecteur-class auxiliary oiler replenishment vessels. Variant ships, named Protecteur and Preserver, are under construction in Canada by Seaspan Marine Corporation.

The double-hulled vessels feature a bow bulb and are the largest ships in the German Navy. They are equipped with replenishment-at-sea stations and electro-hydraulic cargo cranes. Storage capacity includes marine diesel, aviation fuel, lube oil, spare parts, fresh water, provisions, ammunition, and shipping containers. The design incorporates a modular operations rescue centre, known as a Marineeinsatzrettungzentrum, which provides facilities for surgery, intensive care, internal medicine, and dental services. Propulsion is provided by diesel engines, reduction gears, controllable pitch propellers, a bow thruster, and diesel generators. For aviation support, the vessels feature an aft helipad and hangar to operate helicopters, such as the Sea King or NH90, for vertical replenishment. Sensor systems consist of radar, including an aft radar for helicopter operations, and mine avoidance sonar. Defensive armament consists of autocannons, which replaced older Bofors guns, and machine guns. The vessels are also fitted for but not with surface-to-air missiles for point defence.

All three German Navy vessels are stationed at Wilhelmshaven. In 2007, Frankfurt am Main conducted trials with Finnish landing craft. In 2020, Berlin deployed with Standing NATO Maritime Group 2. Royal Canadian Navy personnel have also boarded Bonn to familiarize themselves with the design.