Kills Without Eyes!

ryanwigginton · 02-16-08, 06:35 AM

Just conducted my first manual attack without use of the periscope, sonar or external view, scored two out of two hits! Turned out to be a portuguese medium cargo...

She went to the bottom to. If anyones interested in how to do this, let me know and I'll try and explain breifly. Very useful when stormy seas are exposing your sub or preventing you from accumalting target data through the scope.

...and extremely satisfying!!

RedChico · 02-16-08, 07:57 AM

I will have to kill you for that.

i_b_spectre · 02-16-08, 08:18 AM

Quote:

Originally Posted by ryanwigginton

... If anyones interested in how to do this, let me know and I'll try and explain breifly.

I'd like to hear how you did it, as would others I'm sure.

TomcatMVD · 02-16-08, 08:31 AM

Quote:

Originally Posted by i_b_spectre

Quote:

Originally Posted by ryanwigginton

... If anyones interested in how to do this, let me know and I'll try and explain breifly.

I'd like to hear how you did it, as would others I'm sure.

Yes please!:p

ryanwigginton · 02-16-08, 09:37 AM

Ok...

For it to work without sonar and 100% realism first of all you need a nearby contact report to appear on the map (eg. I had unkown, travelling SW, medium speed). Come out of TC straight away and place a mark on the map where the contact has been reported and take a note of the time.

Plot an intercept course that you predict will bring you in front of the targets course. It just needs to be a rough guess at this point. Go to ahead full (or flank).

The second thing you need for this to work well is an update on the contact report. (note this isn't the same as automatic contact updates in the options. It represents a contact report from another friendly unit) When (and if) you get the second contact report you can now easily determine the targets course and speed. Come out of TC again. Mark the second contact report and note the time.

Calculating the course:
Use the ruler to draw a line from the your first mark to the second mark. You now know the targets course (and can later use this to place your sub at 90 deg AOB).

Calculating target speed:
Measure the distance between both marks you've placed on the map (again using the ruler). My target had travelled 118 km. Because I took a note of the time, when I placed each mark I also know how long it's taken to travel between these two points. My target had covered the distance between 10:37 hrs and 17:09 hrs. That's 6 hrs and 38 min (=398 mins).

118 / 398 = 0.296 (this is the distance in km travelled by the target in 1 minute)
Now...
0.296 x 60 = 17.76 (this is the distance in km travelled by the target in 1 hour)
So...
The target is travelling at 17.76 km/h. To convert this to knots we multiply by 0.54
= 9.6 knots

Note that since this measurement is taken over such a large distance and time it likely to be VERY accurate providing the target doesn't change course.

Preparation:
Now speed your sub along and place yourself 90 deg to the target course and a few hundred meters (I used 0.7km measured with the compass) from it's path. Once your in a good position sink down to 20 - 25 m depth, go silent and open the tubes.

Target Data Computer:
Now go to the attack map and activate manual input.
Range: We've placed ourselves 0.7km from the targets path so we can set this to 700m
Speed: We know the target speed
AOB: We also been careful to place our sub perpendicular to the target course so we can set this to 90
Bearing: I set this at either 350 or 10 depending on wether the target is approaching from left or right. If it's approaching from port side I set it to 350 if it's approaching from my starboard side I set at 10. I'll use 10 deg in this example.

With any luck soon the hydrophone guy will hear your prey closing, and if you've positioned correctly you'll hear it on bearing 90 deg. Tell the sonar man to track the nearest contact so that he updates you on it's position. As it closes this bearing should fall... 89... 88... 87 (if it begins to fall in this way you know your position is good and that the target will infact pass in front of you) 15... 14... 13... 12... 11... 10 degs! (remember this is the bearing we put into the TDC) FIRE!

For me it was very accurate and my first torpedo hit dead centre of the target.

Tips:

1)Use a salvo to increase your chance of success. I used a spread angle of 3 deg.

2)And set a shallow depth if you're not going to ID the target since you don't know it's draft and it will likely run under in stormy weather.

3)Get into the habbit of placing marks & taking the time of contact reports just incase you get an update. If you don't mark it with the map tools it will fade off the map and you'll be kicking yourself when you get an update.

4)I'm certain somebody's already written this in a tutorial many times before. But I just wanted to share my experience.

Goodluck!

Gezur(Arbeit) · 02-16-08, 09:44 AM

I think he just used a homing torpedo

Brag · 02-16-08, 10:05 AM

Good method, but shooting without IDing target . . .

Sailor Steve · 02-16-08, 10:16 AM

"Congratulations, Kaleun. You just sank the ship bringing you your supplies."

ryanwigginton · 02-16-08, 10:51 AM

Quote:

Originally Posted by ryanwigginton

If anyones interested in how to do this, let me know and I'll try and explain breifly.

Turns out it wasn't so brief either. :hmm:

Pisces · 02-16-08, 02:46 PM

Well done!

If I find a nearby map contact I usually assume the worst kind of speed(of that speed-rangge) along the centerline of the reported course-range, and set an intercept course for it if I can make it. Because I have yet had a chance to notice second map updates. Al I have to do is wait for it to arive while listening on hydro. Since you can hear upto 34km with your hydrophone, the target can move 195km (=34km/sin(11.25deg) ) before the possible locations of the target become wider than the hydrophone range. Beyond that distance you risk missing the target if there isn't a map update to guide you. It may pass you beyond the hydrophone range.

Since you know the target speed and course, you don't need to guess when to fire the torpedo's (those 10 degrees). When you have positioned yourself on a course 90 degrees to it's path, aim the scope to your bow (or stern for a stern shot) and set the AOB dial on the attack map to 90 degrees (which ever side it is going to across your scope, left or right) then set the TDC button back to auto. Turning the scope until a gyro angle of 0 occurs and you know the sonar bearing when to fire. You can't miss.... unless you happen to be too close ofcourse.

02-16-08, 06:35 AM	#1
ryanwigginton Weps Join Date: Apr 2007 Location: Nottinghamshire Posts: 368 Downloads: 68 Uploads: 0	Kills Without Eyes! Just conducted my first manual attack without use of the periscope, sonar or external view, scored two out of two hits! Turned out to be a portuguese medium cargo... She went to the bottom to. If anyones interested in how to do this, let me know and I'll try and explain breifly. Very useful when stormy seas are exposing your sub or preventing you from accumalting target data through the scope. ...and extremely satisfying!! __________________ Windows 8 Pro 64-bit, Intel Core i7-2760QM @ 2.40GHz, 8GB RAM, AMD Radeon HD 6990M

02-16-08, 07:57 AM	#2
RedChico Mate Join Date: Mar 2005 Location: Portugal Posts: 55 Downloads: 5 Uploads: 0	I will have to kill you for that. __________________ A Grand Prix Legends racer ---> http://www.rscnet.org \"You are my adversary, but you are not my enemy. For your resistence gives me strength, your will gives me courage, your spirit enobles me. And though I aim to defeat you, should I succeed I will not humiliate you. Instead I will honor you, for without you I am a lesser man. \"

02-16-08, 09:37 AM	#5
ryanwigginton Weps Join Date: Apr 2007 Location: Nottinghamshire Posts: 368 Downloads: 68 Uploads: 0	Ok... For it to work without sonar and 100% realism first of all you need a nearby contact report to appear on the map (eg. I had unkown, travelling SW, medium speed). Come out of TC straight away and place a mark on the map where the contact has been reported and take a note of the time. Plot an intercept course that you predict will bring you in front of the targets course. It just needs to be a rough guess at this point. Go to ahead full (or flank). The second thing you need for this to work well is an update on the contact report. (note this isn't the same as automatic contact updates in the options. It represents a contact report from another friendly unit) When (and if) you get the second contact report you can now easily determine the targets course and speed. Come out of TC again. Mark the second contact report and note the time. Calculating the course: Use the ruler to draw a line from the your first mark to the second mark. You now know the targets course (and can later use this to place your sub at 90 deg AOB). Calculating target speed: Measure the distance between both marks you've placed on the map (again using the ruler). My target had travelled 118 km. Because I took a note of the time, when I placed each mark I also know how long it's taken to travel between these two points. My target had covered the distance between 10:37 hrs and 17:09 hrs. That's 6 hrs and 38 min (=398 mins). 118 / 398 = 0.296 (this is the distance in km travelled by the target in 1 minute) Now... 0.296 x 60 = 17.76 (this is the distance in km travelled by the target in 1 hour) So... The target is travelling at 17.76 km/h. To convert this to knots we multiply by 0.54 = 9.6 knots Note that since this measurement is taken over such a large distance and time it likely to be VERY accurate providing the target doesn't change course. Preparation: Now speed your sub along and place yourself 90 deg to the target course and a few hundred meters (I used 0.7km measured with the compass) from it's path. Once your in a good position sink down to 20 - 25 m depth, go silent and open the tubes. Target Data Computer: Now go to the attack map and activate manual input. Range: We've placed ourselves 0.7km from the targets path so we can set this to 700m Speed: We know the target speed AOB: We also been careful to place our sub perpendicular to the target course so we can set this to 90 Bearing: I set this at either 350 or 10 depending on wether the target is approaching from left or right. If it's approaching from port side I set it to 350 if it's approaching from my starboard side I set at 10. I'll use 10 deg in this example. With any luck soon the hydrophone guy will hear your prey closing, and if you've positioned correctly you'll hear it on bearing 90 deg. Tell the sonar man to track the nearest contact so that he updates you on it's position. As it closes this bearing should fall... 89... 88... 87 (if it begins to fall in this way you know your position is good and that the target will infact pass in front of you) 15... 14... 13... 12... 11... 10 degs! (remember this is the bearing we put into the TDC) FIRE! For me it was very accurate and my first torpedo hit dead centre of the target. Tips: 1)Use a salvo to increase your chance of success. I used a spread angle of 3 deg. 2)And set a shallow depth if you're not going to ID the target since you don't know it's draft and it will likely run under in stormy weather. 3)Get into the habbit of placing marks & taking the time of contact reports just incase you get an update. If you don't mark it with the map tools it will fade off the map and you'll be kicking yourself when you get an update. 4)I'm certain somebody's already written this in a tutorial many times before. But I just wanted to share my experience. Goodluck! __________________ Windows 8 Pro 64-bit, Intel Core i7-2760QM @ 2.40GHz, 8GB RAM, AMD Radeon HD 6990M

02-16-08, 10:05 AM	#7
Brag Navy Seal Join Date: Nov 2006 Location: Docked on a Russian pond Posts: 7,072 Downloads: 2 Uploads: 0	Good method, but shooting without IDing target . . . __________________ Espionage, adventure, suspense, are just a click away Click here to look inside Brag's book: Amazon.com: Kingmaker: Alexey Braguine: Books Order Kingmaker here: http://www.subsim.com/store.html For Tactics visit:http://www.freewebs.com/kielman/

02-16-08, 10:16 AM	#8
Sailor Steve Eternal Patrol Join Date: Nov 2002 Location: High in the mountains of Utah Posts: 50,369 Downloads: 745 Uploads: 249	"Congratulations, Kaleun. You just sank the ship bringing you your supplies." __________________ “Never do anything you can't take back.” —Rocky Russo

02-16-08, 09:44 AM	#6
Gezur(Arbeit) Soundman Join Date: Jan 2008 Posts: 149 Downloads: 0 Uploads: 0	I think he just used a homing torpedo

02-16-08, 02:46 PM	#10
Pisces Silent Hunter Join Date: Dec 2004 Location: AN9771 Posts: 4,904 Downloads: 304 Uploads: 0	Well done! If I find a nearby map contact I usually assume the worst kind of speed(of that speed-rangge) along the centerline of the reported course-range, and set an intercept course for it if I can make it. Because I have yet had a chance to notice second map updates. Al I have to do is wait for it to arive while listening on hydro. Since you can hear upto 34km with your hydrophone, the target can move 195km (=34km/sin(11.25deg) ) before the possible locations of the target become wider than the hydrophone range. Beyond that distance you risk missing the target if there isn't a map update to guide you. It may pass you beyond the hydrophone range. Since you know the target speed and course, you don't need to guess when to fire the torpedo's (those 10 degrees). When you have positioned yourself on a course 90 degrees to it's path, aim the scope to your bow (or stern for a stern shot) and set the AOB dial on the attack map to 90 degrees (which ever side it is going to across your scope, left or right) then set the TDC button back to auto. Turning the scope until a gyro angle of 0 occurs and you know the sonar bearing when to fire. You can't miss.... unless you happen to be too close ofcourse.