Comments by "Sar Jim" (@sarjim4381) on "Drachinifel" channel.

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  3.  @AtomicBabel  You're welcome. The IJN did develop some Ward-Leonard electrical power controls systems for the triple mounts late in the war. This enabled the mount to follow the much faster attack aircraft than the Japanese had encountered early in the war, but there were still problems matching up the pointers to the target before it moved out of the telescopic range finder field of view. The Ward Leonard remote power control was certainly better than manual traversing, but the lack of any kind of radar fire control meant they were still dependent on the Mark 1 eyeball looking through telescopic sights on a heavily vibrating mount while being wreathed in smoke from the gunfire. The USN found out how difficult this was while developing the much more advanced Mark 14 gunsight on the 20mm Oerlikon mount. The same vibration issues affected them until better shock mountings were devised. Once the Mark 14 was integrated into the Mark 51 director, there was a marked increase in the accuracy of 20mm fire, to the point that the 20mm was the AA gun that shot down the most Japanese planes in the last year of the war. Even if the 25mm gun had a faster rate of fire and wasn't so prone to jamming when used at elevations over 60 degrees, the whole system was hopeless without some kind of radar directed and RPC fire control. The Japanese had been working such a system but, as usual, squabbling between the Army and Navy over funding and what system was best meant no system was put in use before war's end.
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  39.  @HighlanderNorth1  That sums it up. I don't think the war in the Pacific would have gone so well without Admiral Robinson in charge. When it comes to fishing, that worked on ships with relatively low freeboard and ones that spent a lot of time dead in the water. It was hard to catch much from a cruiser making way at 25 knots. :-) PT boats were ideal for fishermen since they had the freeboard of a cabin cruiser and spent a lot of time at idle waiting to jump Japanese resupply barges. My dad said they even fish on moonlit nights when they could see their lines and the fish swimming by made luminescent wakes. The skipper was an inveterate fisherman. He'd spend time at the stern tending a couple lines while the XO kept an eye on the radar and yelled for him if there were any hits. By late 1943, there were only the occasional Japanese floatplane around so they didn't much have to worry about air attack. The old man was a motor machinist mate, so he spent a lot of his time with the engines. The heat was suffocating in the engine room so he'd come up on deck to spell gunner's mates so they could get some chow. He was manning the stern 20mm one time when one of those floatplanes came right up over the hill at them with no radar warning. He just happned to be watching that part of the sky when it happened, and he had it in his sights in a heartbeat. He opened up on it and tracked it right across the boat, the safety rails saving him from shooting up the bridge. The plane burst into flames and splashed a couple hundred feet off the bow. One of the other guys had to light his cigarette afterwards because he was shaking too much to hold the match. It was the one and only time he ever fired a weapon in anger during the war. It was also one of two planes the boat was credited with during the war. I still have the picture of him standing behind a piece of the vertical stabilizer they had fished out to make sure they got credit for the kill.
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  42. They were also lacking in good quality anti aircraft batteries. The original C/30 20 mm guns were very poor guns with a small magazine of just 20 rounds. That made them have a practical rate of fire of only about 120 rounds a minute. The C/38 models was a much improved gun, especially when used with the sophisticated quad mounting. It had a 40 round magazine and doubled the rate of fire per barrel compared to the C/30. Allied airmen soon learned to give German vessels used to escort submarines in and out of the Bay of Biscay a wide berth to avoid the fire of these guns. However, it was only when the German Navy started manufacturing Oerlikon 20 mm guns reverse engineered from army models that they had a truly effective single barrel hand swung model. It had a rate of fire of 450 rounds a minute, twice as fast as any German designed gun. As usual,, there were too few produced too late to make much difference. The 37 mm SK C/30 guns were hand loaded with very slow rates of fire and a poor mounting with a failed triaxial mount. The later KM 42 and KM 43 37 mm FLAK versions were much improved but came very late in the war when most of the surface fleet had been lost or decommissioned. The 105 mm guns had the potential to be excellent antiaircraft gun but, once again, they were in a triaxial mount that was too difficult to manufacture and just didn't work well in practice. The gun housing was poorly designed, being open at one end and allowing water to get in and ruin the electrical systems. Too few were manufactured to replace war losses as the war wound down for improvements in the 105 mm gun housing and fire control system to make any difference. In addition to luck, the Prinz Eugen survived as the only large surface vessel of the German navy by continuing improvements in her anti aircraft batteries. All the 37 mm guns were replaced with the German version of the Bofors 40 mm gun and the earlier C/30 and C/38 20 mm with the FLAK 28 and 29 models covering any empty spaces on the deck. While operating in the Baltic in the closing moths of the war, she was able to do impressive shore bombardment missions against the advancing Russian army while fighting off hordes of Russian aircraft due to her much improved anti aircraft batteries and radars.
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