Incoming Resources
- Plan Z, the Nazi bid for naval dominance
- SCHNELLBOOTWAFFE, Adolf Hitler's guerrilla war at sea, S-Boote 1939-45
- U-Boats Beyond Biscay, Dönitz Looks to New Horizons
- Gu̇nther Prien and U-47, the bull of Scapa Flow, Dougie Martindale
- Hitler's secret commandos, operations of the K-Verband
- Beware raiders!, German surface raiders in the Second World War
- Sea wolves, Tony Matthews
- Bismarck, 24 hours to doom, Iain Ballantyne
- U-BOAT ATTACK LOGS, a complete record of warship sinkings from original sources 1939-1945
- The war with Hitler's Navy, Adrian Turner
- The first U-boat flotilla
- Hitler's forgotten flotillas, Lawrence Paterson
- Second U-boat Flotilla
- Death in the doldrums, U-cruiser actions of West Africa
- Tirpitz, the life and death of Germany's last super battleship, Niklas Zetterling & Michael Tamelander
- War of the U-Boats, British merchantmen under fire, Bernard Edwards
- No ordinary war, the eventful career of U-604
- Criticial German submarine operations versus allied convoys during March 1943, an operational analysis