According to a tweet published by the German Embassy of Australia on October 14, 2021, the German Brandenburg-class frigate conducts joint exercise with the Royal Australian Navy's Armidale-class patrol boat HMAS Glenelg.
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Armidale-class patrol boat HMAS Glenelg and Brandenburg-class frigate Bayern (Picture source: Twitter account of German Embassy of Australia)
The Armidale-class patrol boats are 56.8 metres (186 ft) long, with a beam of 9.7 metres (32 ft), a draught of 2.7 metres (8 ft 10 in), and a standard displacement of 270 tons. The semi-displacement vee hull is fabricated from aluminium alloy, and each vessel is built to a combination of Det Norske Veritas standards for high-speed light craft and RAN requirements.
The class can travel at a maximum speed of 25 knots (46 km/h; 29 mph), and are driven by two propeller shafts, each connected to an MTU 16V M70 diesel. The ships have a range of 3,000 nautical miles (5,600 km; 3,500 mi) at 12 knots (22 km/h; 14 mph), allowing them to patrol the waters around the distant territories of Australia, and are designed for standard patrols of 21 days, with a maximum endurance of 42 days.
The main armament of the Armidale class is a Rafael Typhoon stabilized 25-millimetre (0.98 in) gun mount fitted with an M242 Bushmaster autocannon. Two 12.7-millimetre (0.50 in) machine guns are also carried.
