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SUBSIM: The Web's #1 resource for all submarine & naval simulations since 1997 |
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#7951 | |
DILLIGAF
Join Date: Feb 2007
Location: florida
Posts: 2,058
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Known issues during the war. Running depth. (a.) Warheads were heavier than test heads. The wartime torpedo ran with a head down trim. The shore establishment eventually acknowledged a four foot error in running depths. Fleet tests in Australia found an 11 foot depth error. It was not until Aug'42 that a compromise of 10' was agreed and a trim repair kit was issued to the fleet later in that year. Running depth. (b.) The depth sensor was designed for a slower running torpedo. The pressure gradient over the torpedo surface at higher speeds gave the wrong feedback. The sensor was later relocated to a neutral position. The magnetic exploder was designed in the northern latitudes and did not work as well at the equator. The British and Germans had already disabled their magnetic exploders before the USN ordered theirs disabled 24June43. ComSubSWPac had participated in the development of the magnetic exploder, knew the principle was sound, and resisted disablement until Dec'43. The conventional contact exploder was designed for the earlier, slower, 33 knot, Mk 13 torpedo. The newer, faster, 46 knot, Mk 14 torpedo had higher inertial impacts that would cause the cross-wise mounted firing pin to miss the exploder cap. Circular runs There were numerous reports of the Mark 14 running erratically and circling back on the firing boat. A circular run sank the submarine Tullibee, but it may not have been a Mark 14. Likewise, Sargo was almost sunk by a circular run, but the circular run happened because the gyro had not been installed. The subsequent Mark 18 torpedo was no better, sinking Tang. The surface launched Mark 15 torpedo had collars to prevent circular runs, but the Mark 14 was never given this feature.
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Self-education is, I firmly believe, the only kind of education there is. ![]() ![]() Mercfulfate 将補 日本帝國海軍 |
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#7952 | ||
CTD - it's not just a job
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![]() ![]() btw, circular runs are definitely modeled in FotRSU. I had another one the other day... But I'm such a bad shot, I missed me... ![]()
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"...and bollocks to the naysayers" - Jimbuna |
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#7953 |
Electrician's Mate
![]() Join Date: Dec 2016
Posts: 132
Downloads: 324
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#7954 | |
DILLIGAF
Join Date: Feb 2007
Location: florida
Posts: 2,058
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I have been hit this way. Several times.
__________________
Self-education is, I firmly believe, the only kind of education there is. ![]() ![]() Mercfulfate 将補 日本帝國海軍 |
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#7955 |
Navy Seal
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I’m loving the new way warships behaves detecting you and depth charge you in last version, but it’s impossible to set a night surface attack now...due to their eagle’s eyes
![]() Merchants can spot you thousands miles away even at night, and it’s a new problem for this mod in my opinion. Surface approach by night is now a no go...and quite a little shame ![]() ÉDIT: never mind, i found something.
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Last edited by Fifi; 04-03-19 at 11:10 AM. |
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#7956 |
CTD - it's not just a job
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Whudja find? What did you find?...
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"...and bollocks to the naysayers" - Jimbuna |
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#7957 | |
Navy Seal
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Bottom line: you already have experience with American torpedoes. Isn't that great? Oh, the Germans, believing in their front line people, identified and fixed the problems pretty quickly. American Navy, being a strictly topside geniuses and front line idiot organization removed sub captains who thought they had torpedo problems, denied they existed and lost a lot of good skippers. The geniuses didn't want to skipper their own boats so they just found more idiots. That fell apart when Admiral Lockwood made the mistake of befriending one of his idiot sub jockeys, Dudley Morton of the Wahoo, and when "Dud" reported a boatload of duds (see what I did there?), Lockwood had him return so the torpedoes could be checked out. Guess what they found? You're smarter than an Admiral! Where were you when we needed you? ![]()
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Sub Skipper's Bag of Tricks, Slightly Subnuclear Mk 14 & Cutie, Slightly Subnuclear Deck Gun, EZPlot 2.0, TMOPlot, TMOKeys, SH4CMS Last edited by Rockin Robbins; 04-03-19 at 02:09 PM. |
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#7958 |
Navy Seal
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Oh, just took Ralles visuals in his sim file (and only visuals) and made a little mod of that. That’s better.
They are still dangerous but i can approach a little more by night. Day time, they spot you around 8/9 km instead of 12.
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#7959 | |
CTD - it's not just a job
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"...and bollocks to the naysayers" - Jimbuna |
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#7960 | |
Electrician's Mate
![]() Join Date: Dec 2016
Posts: 132
Downloads: 324
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[Mech] Waves amplitude=0.2 Waves attenuation=0.75 [AI Cannons] Max error angle=5 Max fire range=6000 Max fire wait=12 [AI AA guns] Max error angle=5 Max fire range=1500 Max fire wait=7 [AI detection] Lost contact time=35 [Visual] Detection time=120.0 Sensitivity=0.1 Fog factor=1.0 Light factor=2.0 Waves factor=1.5 Enemy surface factor=75.0 Enemy speed factor=15 Thermal Layer Signal Attenuation=2.0 [Radar] Detection time=1 Sensitivity=0.01 Waves factor=1.0 Enemy surface factor=5.0 Thermal Layer Signal Attenuation=1.0 [Hydrophone] Detection time=1 Sensitivity=0.03 Height factor=0 Waves factor=0.5 Speed factor=15 Noise factor=1.0 Thermal Layer Signal Attenuation=3.0 [Sonar] Detection time=20 Sensitivity=0.03 Waves factor=0.5 Speed factor=20 Enemy surface factor=120 Lose time=30 Thermal Layer Signal Attenuation=2.0 Last edited by Michael Wood; 04-03-19 at 03:18 PM. |
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#7961 | |
Sink'em All
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Funniest thing I've had happen to me in SH4 was getting hit in the conning tower by a circular run and then hearing those immortal words, "Torpedo is a dud, Sir." ![]() ![]() ![]()
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Head Deep and Keep'em Astern" - LtCDR Samuel D Dealy SHIV Guide | Imperial Japanese Navy | US Submarines |
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#7962 | |
Navy Seal
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#7963 |
CTD - it's not just a job
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Part of the problem with the game's sensors is that if you adjust for a night surface attack, none of the ships, subs & planes can see anything from 2500 yards or whatever the approximate distance set. With that, you then end up with two BB sitting 5000 yards across from each other, oblivious to the existence of each other, which looks a bit strange. Two ships passing in the night, but during the daylight hours. I was just wondering if you can see if an IJN ship shoots at a USN ship from an appropriate distance.
CapnScurvy has done some more tweaking, and we'll begin some preliminary testing for the next mix. ![]()
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"...and bollocks to the naysayers" - Jimbuna |
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#7964 |
Machinist's Mate
![]() Join Date: Jun 2016
Location: DFW Texas
Posts: 123
Downloads: 106
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Thought I should mention this one. Plus someone may want to go to the place and time mentioned to play the encounter. Assuming that it will play differently for them than it did for me.
USS Trout SS-202, a Tambor out of Freemantle. April 5th, 1943 just east of the Leyte Gulf. Came into radar contact with a Japanese flagged Medium Tanker NW of me and on a NW course. I was setting up an approach for attack, around 08:40 hours when suddenly his contact icon changed to the sunk ship tombstone on the map at approximately 126 deg 15 min E, 10 deg 20 min N. At the same time I made radar contact with a small group on a SE course to my NE. So I turned my attention to them. This two boat group consisted of a German flagged Troop Ship Modern Class followed by a Japanese flagged Medium Combifreighter. I was submerged and setting up a final a firing solution on the German ship when it also sank before my eyes at about 3500 yards from my submarine. Location 126 deg 30 min E, 10 deg 30 min N. All I did was ping him for position! Is this a bug? Anyone else have this happen? Maybe American submarines are operating near me with no modeled explosion sound or graphics for their torpedoes? I sank the remaining Japanese Combifreighter. Surfaced and returned to course by 10:00 hours. Also of note. I now have the red headed roman nosed octuplets on board. 3 on watch, 1 in the conning tower, 4 on deck in the command room. An observation. IMHO V 0.81 has made the game tougher in at least two ways. The enemy having better detection means leaning on the batteries even more during longer submerged attack runs. At the same time slower battery charging is making it take longer to get a full charge. I do agree though about the detection. A little much, especially at night.
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https://www.twitch.tv/immelmann_burn Acer Predator G6-720 Intel Core i7 7th Gen 7700K (4.20 GHz) 16 GB DDR4 NVIDIA GeForce GTX 1080 8 GB GDDR5X 256 GB NVMe SSD 2 TB SATA III SSD 2 TB SATA III HDD Creative Sound BlasterX AE-5 Pure Edition Windows 10 Home 64-Bit, FOTRS Ultimate v0.90_RC3, LAA Last edited by Immelmann; 04-03-19 at 07:16 PM. Reason: edit 136 deg to 126 deg |
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#7965 |
CTD - it's not just a job
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There are some US AI subs roaming about, not co-ordinated with headquarters at this time, but their torpedoes are visible, as are their explosions. You would also be able to hear them on sonar, see them on radar and sight. Nothing AI submerged (at this time). I don't think there are any placed in that area though, and they would be on the surface, with the IJN running away from them. The AI subs seldom get to use their torps, except on the IJN AI subs when a certain USN sub skipper isn't paying attention
![]() What was the weather like Immelmann, and were they already low in the water? There may have been an earlier carrier plane attack, or an AI sub attack on them that caused damage, but bad spawns can also set the ships too low at times. ![]()
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"...and bollocks to the naysayers" - Jimbuna |
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