KM 14 liaison cutter KM 15 liaison cutter K 2 floating signals base (radio station) P 3 motorboat Two platoons of signal troops and recce squads Base KU 1 armed cutter KU 2 armed cutter KU 3 armed cutter ORP Neptun tugboat ORP Generał Sosnkowski hospital ship K 12 floating munitions depot K 13 floating munitions depot K 14 floating fuel depot K 15 floating fuel depot K 25 floating fuel depot K 17 canteen K 19 floating service and repair vessel K 7 frogmen support vessel K 9 floating barracks K 30 floating barracks Riverine Air Escadrille K 4 barrack vessel P 4 motorboat Nr. 7 speed-boat Three R-17W seaplanes (mobilized separately) Pińsk naval base ORP Kiliński tugboat P 1 motorboat P 2 motorboat Fifteen service vessels of various types AA platoon Signals platoon Administrative service platoon War-time reorganization On September 15, 1939, the Riverine Flotilla received orders from the commanding officer of the Independent Operational Group Polesie, Gen. Franciszek Kleeberg. Because of a possible breakthrough of the German forces in the northern sector of the front, the orders for the Flotilla were to prepare a defence of a 200 kilometres long front along the Prypeć river. The forces were to be divided into 8 semi-independent task forces, each defending a separate part of the river. However, a particularly dry and sunny summer resulted in shallow waters preventing many ships from reaching their area of operations. In addition, the Soviet invasion of September 17, 1939, made the plans obsolete. Janów Group 2 x armed cutters naval infantry platoon 1 x Bofors 40 mm gun Kaczanowicze Group ORP Kraków river monitor ORP Zuchwała gunboat 2 x armed cutters Group ORP Wilno monitor ORP Zawzięta gunboat ORP Zaradna gunboat 2 x minesweepers rifle company Lemieszewicze Group K 2 signals boat 2 x liaison cutters (?) 2 x liaison platoons Mosty Wolańskie Group ORP Horodyszcze monitor ORP Warszawa monitor ORP Generał Sikorski AA ship ORP Hetman Chodkiewicz AA ship ORP Generał Sosnkowski hospital ship 2 x armed cutters Przewóz Łachewski Group ORP Pińsk monitor ORP Toruń monitor 6 x armed cutters Nyrcza Group ORP Mątwa 2 x minesweepers Sytnica Group ORP Admirał Siercinek HQ ship See also Polish Defensive War Vessels of Polish Riverine Flotilla Riverine Flotilla of the Polish Navy Polish Navy Riverine Flotilla of the Polish Navy Riverine warfare