SUBSIM Radio Room Forums



SUBSIM: The Web's #1 resource for all submarine & naval simulations since 1997

Go Back   SUBSIM Radio Room Forums > Silent Hunter 3 - 4 - 5 > Silent Hunter 4: Wolves of the Pacific
Forget password? Reset here

Reply
 
Thread Tools Display Modes
Old 03-05-19, 02:19 PM   #16
Mios 4Me
Sonar Guy
 
Join Date: Feb 2019
Posts: 394
Downloads: 38
Uploads: 0


Default

Thanks for the link. That's a good first step, but, considering the liberties Ubisoft apparently has taken with surface and AA gunnery, along with perhaps not accounting for the effects of torpex and the neutering of historical night surface attacks, I still wouldn't know what creative license they've taken with these sensors.



That's a good point about some merchants having radar instead of some version of Japanese Metox. It must be useless past ~18 km if so, because no one ever reacts to us running ahead to that distance. I don't have enough examples but my impression is that ships in difficult conditions like these do not maneuver to avoid us beyond 600 m or so unless our radar is on. Perhaps only the largest freighters, my target that night, and tankers have it.


Berserker, these are the first targets worthy of a Mk 16 we've seen in days, even off Tokyo, and the ceasefire is less than 10 days off. And because I'm a bloodyminded SOB.


ETA: both convoys changed courses to stay roughly parallel - apparently bound for Sitka (WTH?) - but not remaining mutually supporting. That's where I really question the game's AI.



Both had the same number of ships but one convoy had one escort to the other's four. One torp and a little gunnery practice later, there was only the one convoy left, with two of its heaviest units sniped so far already. The surface awash and flank attacks don't work in this situation; I have to run ahead, submerge perpendicular to the center column, ascend from the thermocline once the lead DD has passed, then dart back and forth between the center and an outside column to maintain enough distance for the torpedoes to arm while still keeping the target in sight.

Last edited by Mios 4Me; 03-05-19 at 02:33 PM.
Mios 4Me is offline   Reply With Quote
Old 03-05-19, 08:05 PM   #17
Armistead
Rear Admiral
 
Join Date: Dec 2008
Location: on the Dan
Posts: 10,863
Downloads: 364
Uploads: 0


Default

Quote:
Originally Posted by Mios 4Me View Post
SH4 is putting on a graduate-level exam on bad weather tactics tonight: I have two escorted convoys converging in the middle of the night with us right in between, but when the scope pops up, we're in a heavy storm on a moonless night. I can see shapes at either end of the boat, but can't lock on to anything.



Did I mention this is just a few hours before Hiroshima and the safety of Tokyo Bay is only hours away? Time is very short, so i don't want to sling torpedoes around willy-nilly; the emperor is quite welcome to keep his small-tonnage freighters for all I care, but the large ones belong to me.



Any suggestions?

Surface and get to work with those 40's and deckgun. Just watch your radar if you see a escort coming because he has radar, dive deep enuf to be dived and he'll go back on station. Just get close to ships using radar and ask for sonar bearings to nearest ship and fire, you'll score.
__________________

You see my dog don't like people laughing. He gets the crazy idea you're laughing at him. Now if you apologize like I know you're going to, I might convince him that you really didn't mean it.
Armistead is offline   Reply With Quote
Old 03-06-19, 09:53 AM   #18
Mios 4Me
Sonar Guy
 
Join Date: Feb 2019
Posts: 394
Downloads: 38
Uploads: 0


Default

FYI: locked on attacks are possible within a 50 meter band from 450-500m, i.e. between the point where torpedoes arm and where the TDC can no longer distinguish a target in bad weather.


No idea whether it applies in the worst weather.
Mios 4Me is offline   Reply With Quote
Old 03-11-19, 08:29 PM   #19
Sniper297
The Old Man
 
Join Date: Dec 2005
Location: Philadelphia Shipyard Brig
Posts: 1,386
Downloads: 160
Uploads: 19
Default

This morning in an Asiatic career ran into one of them bad weather situations with three anchored cruisers, playing with auto targeting and map contact updates on. With radar the outlines of ships show up on the map in gray, and also on the plotting map.



Couldn't get anything at all visually, but playing with the plot and moving the helm and TBT around;



Got the torpedo track line going through the target before shooting, nailed all three.



Never actually saw the targets without switching to external view and "flying" over to them. Dunno if this would work on moving targets, you'd have to guesstimate and do a lot of math to know where to aim, but with a slow moving convoy, overlapping targets, and a spread you'd probably get a reasonable percentage of hits.
Sniper297 is offline   Reply With Quote
Old 03-11-19, 10:31 PM   #20
Sniper297
The Old Man
 
Join Date: Dec 2005
Location: Philadelphia Shipyard Brig
Posts: 1,386
Downloads: 160
Uploads: 19
Default

FOUND ONE!

Same day, single target in same weather. Instead of measuring the speed of the target on the map, I used this table;

nautical mile 6080 feet
2027 yards.
46 knots = 93,227 yards per hour
1554 yards per minute
26 yards per second
500 yards = 19 seconds
1000 yards = 38 seconds
1200 yards = 46 seconds
1500 yards = 58 seconds
1750 yards = 67 seconds
2000 yards = 77 seconds (1 minute 17)
2500 yards = 96 seconds (1 minute 36 seconds)

Drew out the target track, set my sub 1500 yards off the track (facing away since I was out of torpedoes forward), then measured the distance the target moved in one minute by the stopwatch. Drew out the projected torpedo track then measured off 350 yards along the target track from that. When the target reaches the correct distance from the torpedo track, that's the firing point. Constant bearing spread 10 seconds apart for three fish (all I had left) got two hits, although the first one alone would have done it.

Never saw the target visually.

Sniper297 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 09:29 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright © 1995- 2024 Subsim®
"Subsim" is a registered trademark, all rights reserved.