Don't dive in shallow waters

thegrindre · 03-04-15, 03:02 AM

I've learned not to engage the enemy if the waters underneath me aren't at least 200 feet deep. That thermal layer thing is at 190 and, so far, I've been able to 'out run'/hide from everybody as long as I'm below the thermal layer.

If I'm above it, they hunt me down and are on me like white on rice.

03-04-15, 11:13 AM

well the thermal layer moves around a little from 150-200 ft but as a rule its useless in shallow waters and more of an open ocean tactic to use.

once you get the hang of evasion and attack technics to avoid detection you will have a lot more survivability in shallow waters but often you just have to run for it constantly adjusting course to keep them off you.

Sniper297 · 03-04-15, 11:37 AM

You forgot to add "while heading for deeper water"!

My biggest objection to the thermal layer in the game is it's a solid flat plane which unrealistically works 100% every time - in real life the temperature and salinity changes to the layers can be mild - moderate - strong, they can make the detection anywhere from slightly more difficult to impossible depending on how sharp the temperature change is, instead of going from perfect sonar conditions to the Klingon cloaking device.

One thing to keep in mind for the game though - the temperature sensor is on the keel of the sub. When you get the message "passing thermal layer" (can be anywhere from 150 to 250 feet, although it's usually less than 200) you need to get the whole sub under the layer - at least 60 feet deeper than the message depth. Again it's a flat plane similar to the surface - if you submerge to 35 feet the top of the conning tower and periscope shears are sticking up above the surface and are visible to lookouts at close range. The thermal layer is programmed (oversimplified!) the same way, if the thermal layer is at 180 and you're at 215 feet, the top of the conning tower and periscope shears are "visible" to sonar since they're above the layer. At a keel depth of 240 feet the tops of the periscope shears are five feet below the layer, so "invisible" to sonar.

One tactic in shallow seas I've used, got a task force cruising along in 100 feet of water, but his course will take him over deeper water about 12 hours from now - so I parallel his course (10 to 15 thousand yards ahead) matching his speed until my fathometer indicates deeper water, then I submerge and wait for him to arrive.

merc4ulfate · 03-05-15, 02:36 PM

You should try to hide from British escorts in a U-boat with thermals. They are not as easily misled by the thermals as the Japanese are on the amercian side.

The British ships are much more persistent at ASW than the Japanese.

Sniper297 · 03-06-15, 12:51 AM

"U-bat"? Flying submarine?

Did you try getting all the way under the layer, at least 50 feet lower than the "whisper" depth? Possibly 1.5 improved the programming so it's not as simplistic as 1.4.

03-04-15, 03:02 AM	#1
thegrindre Engineer Join Date: Feb 2015 Location: Central Arkansas Posts: 211 Downloads: 55 Uploads: 1	Don't dive in shallow waters I've learned not to engage the enemy if the waters underneath me aren't at least 200 feet deep. That thermal layer thing is at 190 and, so far, I've been able to 'out run'/hide from everybody as long as I'm below the thermal layer. If I'm above it, they hunt me down and are on me like white on rice. __________________ a.k.a. Rick Silent Hunter 4 Gold v1.5 Intel core 2 duo @ 2.33GHz nVidia Gforce 8800 GTX 768mb 4 gigs ram w/4 gig virtual memory Windows XP Pro w/SP 3 on a 32 bit system At my age, 'Happy Hour' is a nap!

03-05-15, 02:36 PM	#4
merc4ulfate DILLIGAF Join Date: Feb 2007 Location: florida Posts: 2,058 Downloads: 210 Uploads: 0	You should try to hide from British escorts in a U-boat with thermals. They are not as easily misled by the thermals as the Japanese are on the amercian side. The British ships are much more persistent at ASW than the Japanese. __________________ Self-education is, I firmly believe, the only kind of education there is. ~Isaac Asimov~ Mercfulfate 将補日本帝國海軍 Last edited by merc4ulfate; 03-06-15 at 08:15 PM. Reason: TOO MUCH SCOTCH

03-04-15, 11:13 AM	#2
Webster Stowaway Posts: n/a Downloads: Uploads:	well the thermal layer moves around a little from 150-200 ft but as a rule its useless in shallow waters and more of an open ocean tactic to use. once you get the hang of evasion and attack technics to avoid detection you will have a lot more survivability in shallow waters but often you just have to run for it constantly adjusting course to keep them off you.

03-04-15, 11:37 AM	#3
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	You forgot to add "while heading for deeper water"! My biggest objection to the thermal layer in the game is it's a solid flat plane which unrealistically works 100% every time - in real life the temperature and salinity changes to the layers can be mild - moderate - strong, they can make the detection anywhere from slightly more difficult to impossible depending on how sharp the temperature change is, instead of going from perfect sonar conditions to the Klingon cloaking device. One thing to keep in mind for the game though - the temperature sensor is on the keel of the sub. When you get the message "passing thermal layer" (can be anywhere from 150 to 250 feet, although it's usually less than 200) you need to get the whole sub under the layer - at least 60 feet deeper than the message depth. Again it's a flat plane similar to the surface - if you submerge to 35 feet the top of the conning tower and periscope shears are sticking up above the surface and are visible to lookouts at close range. The thermal layer is programmed (oversimplified!) the same way, if the thermal layer is at 180 and you're at 215 feet, the top of the conning tower and periscope shears are "visible" to sonar since they're above the layer. At a keel depth of 240 feet the tops of the periscope shears are five feet below the layer, so "invisible" to sonar. One tactic in shallow seas I've used, got a task force cruising along in 100 feet of water, but his course will take him over deeper water about 12 hours from now - so I parallel his course (10 to 15 thousand yards ahead) matching his speed until my fathometer indicates deeper water, then I submerge and wait for him to arrive.

03-06-15, 12:51 AM	#5
Sniper297 The Old Man Join Date: Dec 2005 Location: Philadelphia Shipyard Brig Posts: 1,386 Downloads: 160 Uploads: 19	"U-bat"? Flying submarine? Did you try getting all the way under the layer, at least 50 feet lower than the "whisper" depth? Possibly 1.5 improved the programming so it's not as simplistic as 1.4.