Patrol Boat P29 (Boltenhagen) is one of the two wrecks in Cirkewwa and one of the most popular dive sites in Malta. P29 was a former patrol boat for the Maritime Squadron of the Armed Forces of Malta. She was intentionally scuttled in 2007 to serve as scuba diving attraction and artificial reef. Before scuttling the wreck was made safe both environmentally and for divers. P29 patrol boat lies about 150 m off shore from Cirkewwa and approximately 150 m distance from Tugboat Rozi wreck. P29 wreck is 52 m long, and sits upright at a depth of 34 m with the highest part at only 12 m deep from the surface. Many areas were left open for the experienced divers to explore and penetrate the wreck. For divers choosing not to enter P29, there is plenty of marine life to view during exploration of the exterior.