The Hunt: An illustrated example of how to sink a ship - Page 6

nirwana · 08-31-08, 11:23 AM

@ Schpeedy

For close attacks around 700m at a 90 degree angle (i dont like 45 at this distance) to the course of the target i set AOB 35/45 (merchant/warship), speed to 6knts, bearing zero and fire as soon as the target's bow passes the zero bearing in the scope or tactical map. 8 out of 10 it hits right in the center.

Pisces · 08-31-08, 11:47 AM

Quote:

Originally Posted by niteflier

When I click on the pdf version "here", It takes me to the freenet site.... but it doesnt do anything;no response;no pdf download.

Has the Adobe file been deleted? Any info appreciated!! Ken

No, the link works for me perfectly. I used Opera 9.27 and it asked if wanted to save that file or open it using the apropriate application (Adobe). Both worked. My IE 6.0 showed the file using the plugin for viewing pdf's.

You may want to check if your Adobe/pdf-viewer is in working order.

Pisces · 08-31-08, 11:49 AM

Quote:

Originally Posted by nirwana

@ Schpeedy

For close attacks around 700m at a 90 degree angle (i dont like 45 at this distance) to the course of the target i set AOB 35/45 (merchant/warship), speed to 6knts, bearing zero and fire as soon as the target's bow passes the zero bearing in the scope or tactical map. 8 out of 10 it hits right in the center.

Looked at the date of his message?

niteflier · 08-31-08, 12:00 PM

Just looked at the date: Feb 2006

Any place else to get the pdf.file?

niteflier · 08-31-08, 12:03 PM

I'll check my Adobe Reader; Thanks for the help

Brag · 08-31-08, 12:24 PM

Excellent post. It is great to see so much time and effort made for the benefit of the community.

kylania · 09-15-08, 02:15 PM

Quote:

Originally Posted by niteflier

Just looked at the date: Feb 2006

Any place else to get the pdf.file?

I'll check when I get home. I know I have copies of the FLV videos he had for this, I should still have the PDF.

ReM · 09-15-08, 02:53 PM

Here it is

Darksun · 09-15-08, 04:49 PM

This is an easy alternative to the 3:15 rule.

If you are doing 100% realism I highly recomend OneLifeCrisis mod. If you don't have it, you can still use it's method for determining the speed of a target you can see.

I order to use it, you need to time the ship moving past a fixed wire like the one in the periscope. In order to work your speed needs to be accounted for. You can either come to a dead stop (good luck) or you can point your boat right at (or away) from the target.

You need an AOB that's somewhat off to the side of the ship. 90 works great. The magic of this method is that as long as the ship isn't heading right toward or directly away from you, it works. Any AOB that's not 350-10 or 170-190 will work.

Put the center line of the scope right in front of the ship. When the bow touches, start the clock. Don't move the scope! When the end of the stern is just passing the wire, stop the clock.

Speed in Knots = 1.94 x ship length / time in seconds

Pisces · 09-16-08, 04:58 AM

Quote:

Originally Posted by niteflier

Just looked at the date: Feb 2006

Any place else to get the pdf.file?

There is nothing wrong with the link to the pdf in the 1st message. I can download it without a problem.

Steeltrap · 09-17-08, 01:27 AM

Quote:

Originally Posted by John Pancoast

Quote:

Originally Posted by Steeltrap

Quote:

Originally Posted by John Pancoast

Thanks for the great aid.........but question. You stated you noticed you and the target would arrive at the intercept point at the same time.

How do you know what time the target will get there ? His est speed/distance to point ?

It's because this method solves for an intercept point using plots based on the same 'distance per kt of speed'. In essance you're solving:

"What course do I need to set so that the target and I arrive at the SAME POINT at the SAME TIME?"

Without going into the underlying trig, your intercept course will get you at YOUR speed to the same point the target will get at ITS speed in an identical amount of time - hence you will get there together. Plotted/calculated perfectly, you would actually collide.....:rotfl:

That's why the 'intercept speed x initial proportionality measure' circle is centred on the initial plot line for the target:
i.e. 1km per kt of speed of target = 6km line based on target's speed of 6kts
Hence, at an intercept speed of 12kts the 'proportionate circle' is a radius of 12 x 1 = 12kms, and this is centred on the point along the target plot 6km from initial plot point.

Hope that answered your question without making it more confusing!

Great info. thanks ! Looks like I was making it harder than it actually is

So basically, since you always want to get to the intercept point before the target, you must always travel to that point at a greater speed than what you used as a reference when plotting the intercept point, correct ?

Theoretically, with all measurements perfect and plotting perfect, your intercept will result in you colliding (as I mentioned).

This won't really happen as the measurements/plotting won't be that exact. The real point is that you will know that, worst case, you'll be getting there when the target does. That means you just adjust things based on weather conditions (for example, if the weather is poor you'll want to be able to submerge so you can hear the contact approaching). For better weather, especially with the 16km visibility enhancement, you'll see the target in plenty of time.

Another thing you can do is see how much time you've got to get to your target point based on your planned speed, then increase speed for the last few hours. This should have you sitting around the area a few hours in advance. If I do that, I then plot a course back toward the target's known location then proceed at slow speed at 25m depth - you'll hear it on your hydrophone out to 20km easily.

Red Heat · 09-17-08, 06:46 AM

Well done...outstanding job!

UnderseaLcpl · 09-17-08, 07:28 AM

Wow, this is old. Nice, but old.

Kipparikalle · 09-17-08, 01:48 PM

Fantastic work Herr Kaleun with big H

Outstanding, this efficiently help the new Kaleuns to learn faster to sink British wessels, and win the war for us. For the Third Kindomn lasting over 1000 years!

JHuschke · 09-27-08, 11:38 AM

Yes, but it is pretty hard to remember all that..need to keep doing that so I can remember it often! May I ask, can there be a tutorial mission? lol

So much!

08-31-08, 12:03 PM	#80
niteflier Swabbie Join Date: Aug 2007 Location: California Posts: 12 Downloads: 32 Uploads: 0	I'll check my Adobe Reader; Thanks for the help Last edited by niteflier; 08-31-08 at 12:27 PM.

08-31-08, 12:24 PM	#81
Brag Navy Seal Join Date: Nov 2006 Location: Docked on a Russian pond Posts: 7,072 Downloads: 2 Uploads: 0	Excellent post. It is great to see so much time and effort made for the benefit of the community. __________________ 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/

09-15-08, 02:53 PM	#83
ReM Commodore Join Date: Apr 2005 Location: Brewsky, Galore Posts: 618 Downloads: 19 Uploads: 0	Here it is __________________ Daddy cool

09-15-08, 04:49 PM	#84
Darksun Sailor man Join Date: May 2005 Posts: 49 Downloads: 0 Uploads: 0	Math trick to determine speed. This is an easy alternative to the 3:15 rule. If you are doing 100% realism I highly recomend OneLifeCrisis mod. If you don't have it, you can still use it's method for determining the speed of a target you can see. I order to use it, you need to time the ship moving past a fixed wire like the one in the periscope. In order to work your speed needs to be accounted for. You can either come to a dead stop (good luck) or you can point your boat right at (or away) from the target. You need an AOB that's somewhat off to the side of the ship. 90 works great. The magic of this method is that as long as the ship isn't heading right toward or directly away from you, it works. Any AOB that's not 350-10 or 170-190 will work. Put the center line of the scope right in front of the ship. When the bow touches, start the clock. Don't move the scope! When the end of the stern is just passing the wire, stop the clock. Speed in Knots = 1.94 x ship length / time in seconds __________________ "[A submarine's] seaworthyness is unlimited and is, in this respect, in a stronger position than surface ships..." - U-Boat Commander's Handbook.

09-17-08, 06:46 AM	#87
Red Heat Ace of the Deep Join Date: Dec 2007 Location: Portugal Posts: 1,093 Downloads: 267 Uploads: 0	Well done...outstanding job! __________________ "There is three kinds of man: the living, the death, and those who are at Sea." Plato

08-31-08, 11:23 AM	#76
nirwana Sonar Guy Join Date: Jun 2008 Posts: 380 Downloads: 17 Uploads: 0	@ Schpeedy For close attacks around 700m at a 90 degree angle (i dont like 45 at this distance) to the course of the target i set AOB 35/45 (merchant/warship), speed to 6knts, bearing zero and fire as soon as the target's bow passes the zero bearing in the scope or tactical map. 8 out of 10 it hits right in the center.

08-31-08, 12:00 PM	#79
niteflier Swabbie Join Date: Aug 2007 Location: California Posts: 12 Downloads: 32 Uploads: 0	Just looked at the date: Feb 2006 Any place else to get the pdf.file?

09-17-08, 07:28 AM	#88
UnderseaLcpl Silent Hunter Join Date: May 2008 Location: Storming the beaches! Posts: 4,254 Downloads: 0 Uploads: 0	Wow, this is old. Nice, but old. __________________ I stole this sig from Task Force

09-17-08, 01:48 PM	#89
Kipparikalle Samurai Navy Join Date: Aug 2007 Location: Finland Posts: 580 Downloads: 2 Uploads: 0	Fantastic work Herr Kaleun with big H Outstanding, this efficiently help the new Kaleuns to learn faster to sink British wessels, and win the war for us. For the Third Kindomn lasting over 1000 years!

09-27-08, 11:38 AM	#90
JHuschke XO Join Date: May 2008 Location: Munich, Germany Posts: 432 Downloads: 32 Uploads: 0	Yes, but it is pretty hard to remember all that..need to keep doing that so I can remember it often! May I ask, can there be a tutorial mission? lol So much!