Take note of the tilt

onelifecrisis · 09-26-07, 03:28 AM

Quote:

Originally Posted by Venatore

http://www.megavideo.com/?v=WWFJUL9L

:rotfl: :rotfl: :rotfl: :rotfl: :rotfl: :rotfl: :rotfl: :rotfl: :rotfl: :rotfl:

That was friggin brilliant.

andylegate · 09-26-07, 05:42 AM

Okay,

I was a Tin Can sailor while in the Navy (1984 - 1994). I served on board the USS Preble (DDG-46), USS Coontz (DDG-40), and the USS MacDonough (DDG-39).
These class destroyers were 513 feet long and 53 feet wide at the widest beam, draft of almost 18 feet (5.4 meters) and they displaced about 5,600 tons.

These ships were not designed to roll past 52 degrees. As a matter of fact, my radar antenna (AN/SPS-48C), was the 2nd highest object on the masts. It weighed about 2 1/2 tons (it was a phased array attenna, quite large made out of wave guide stacked up, looks like a large rectangle) and was designed to shear off if the ship ever rolled passed that 52 point, so that the center of gravity would shift and allow the ship to go up right again.
If my ships had rolled over as far as the one in the video, that would have been all she wrote! My ships would have continued to roll until captsised at that point.

I don't know how far she would have heaved over from a torp hit (thank god I never had to find that out!), but I'm sure that it can be figured out.
One would need to know the amount of energy release from the torp, angle of impact, depth of impact from the water line, and where along the length of the hull the torp hit (if it was in the stern or bow, the ship would be shoved over and wouldn't roll).
I can tell you right now that a torp hit on my class of destroyer in the same area as the movie, would not cause the ship to go up in a fire ball, but would have opened up the #2 boiler room to the sea.

Most modern day weapons are designed to penatrate, then detonate. I used to teach the Harpoon Cruise missle (RGM-84D) and that is how they work. Many of today's modern torpedos don't actually impact with the hull, but instead dip below the keel and then detonate.........with enough energy to lift the middle of the ship out of the water, breaking her back.
If our modern ones can do that (with over 5,600 tons) I imagine that an actual side impact that's shallow would damn near push the ship over!

09-26-07, 05:42 AM	#2
andylegate Medic Join Date: Sep 2007 Location: SC, USA Posts: 168 Downloads: 2 Uploads: 0	Okay, I was a Tin Can sailor while in the Navy (1984 - 1994). I served on board the USS Preble (DDG-46), USS Coontz (DDG-40), and the USS MacDonough (DDG-39). These class destroyers were 513 feet long and 53 feet wide at the widest beam, draft of almost 18 feet (5.4 meters) and they displaced about 5,600 tons. These ships were not designed to roll past 52 degrees. As a matter of fact, my radar antenna (AN/SPS-48C), was the 2nd highest object on the masts. It weighed about 2 1/2 tons (it was a phased array attenna, quite large made out of wave guide stacked up, looks like a large rectangle) and was designed to shear off if the ship ever rolled passed that 52 point, so that the center of gravity would shift and allow the ship to go up right again. If my ships had rolled over as far as the one in the video, that would have been all she wrote! My ships would have continued to roll until captsised at that point. I don't know how far she would have heaved over from a torp hit (thank god I never had to find that out!), but I'm sure that it can be figured out. One would need to know the amount of energy release from the torp, angle of impact, depth of impact from the water line, and where along the length of the hull the torp hit (if it was in the stern or bow, the ship would be shoved over and wouldn't roll). I can tell you right now that a torp hit on my class of destroyer in the same area as the movie, would not cause the ship to go up in a fire ball, but would have opened up the #2 boiler room to the sea. Most modern day weapons are designed to penatrate, then detonate. I used to teach the Harpoon Cruise missle (RGM-84D) and that is how they work. Many of today's modern torpedos don't actually impact with the hull, but instead dip below the keel and then detonate.........with enough energy to lift the middle of the ship out of the water, breaking her back. If our modern ones can do that (with over 5,600 tons) I imagine that an actual side impact that's shallow would damn near push the ship over! __________________ My Real Life Navy Brag Page Below http://www1.freewebs.com/andylegate/