GWX can present some serious challenges!
On my 11th patrol about 200 miles off the African Coast, South of Freetown, I get a hydrophone contact from a merchant closing at slow speed. Feeling confident (I had already bagged 33,000 tons on this patrol) I plotted the course and set my own course to intercept. Visibility was very poor and I hoped to use this to my advantage. The single contact developed into a small convoy and when the first ship was visible through my periscope I could identify it as a 'Large Merchant' followed closely by a 'Modern Tanker' both ships were unlit but as I set myself on a parallel course for a submerged attack, I could just make out the Stars and Stripes ensign of the first ship. It was May 1941 so this was still a neutral target. As neither ships appeared to be armed, I decided to surface to get a better look. Closing on a parallel course to within 150 Metres of the tanker, I could see that this too was flying the American ensign - I have tried my best to avoid attacking neutral vessels so I put the crew back to cruising stations and was about to turn away when the WO spotted a third ship - this had been hiding behind the tanker and was still too far away for me to get a a decent view of it but it was clearly a lot bigger than the tanker. As I tried to manoeuvre closer to the third vessel a 'Somers' class warship suddenly appeared coming straight toward me at high speed and then turned across my bows forcing me to take evasive action. The warship was also American and did not fire on me. I was now in the middle of four vessels all manoeuvring in a hectic fashion - the tanker was still putting itself between my boat and the larger, as yet unidentified, ship - the warship was darting in and out all over the place and the 'Large Merchant' had turned round and was now coming back towards me - despite all of this, I managed to get close enough to the third ship to identify it as a 'Ceramic' class ocean liner flying a British Red Ensign. Fortunately it wasn't armed so I prepared to attack it on the surface. For almost two hours I struggled to get a clear torpedo shot with the other ships continually protecting the target by placing themselves between it and my boat - visibility remained bad and I had to use a fair bit of guess work and manoeuvring to stay in contact while not running into the other vessels or the erratically circling warship. Eventually (and partly in desperation) I fired a torpedo from the bow when I was directly behind the target at a range of 350 Metres. The torpedo exploded under the target's stern and brought its speed down until it eventually stopped in the water. The other vessels still tried to put themselves between my boat and the target but I managed to get another torpedo shot which exploded amidships. Visibility was still poor and the other ships continued to baulk me. Nevertheless, the liner was now settling in the water and after another ten minutes or so I was able to observe it going down as my crew cheered and with 20,000 tons plus added to my bag! The American warship never fired a shot and I left the scene on the surface with visibility still so poor that they were all soon out of sight.
It was an exciting and challenging battle but I didn't live to tell the tale - returning to St Nazaire, I launched an attack on an armed ore carrier just off Cape Finnistere, I should have let it go because I had no torpedoes left and in an exchange of gunfire, where I thought I was getting the better of him, until a shell made a direct hit on my control room causing my boat to sink with all hands.
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