Mark 28 Torpedo

joefremont · 08-16-13, 12:33 PM

Half way through my latest campaign I purchased a batch of mk27's and tried them out on a couple escorts and was extremely disappointed in the results, even when they hit they did not seam to phase them. After having finished an SH3 campaign and liking the German homing torpedo's I though about trying to import the T11 but then read about the MK28, which was based on the Mk18 and started production in 1944 and would probably have the same acoustic homing hardware as the Mk27, so using Silent 3ditor i tweaked the performance data for the MK27 to match the MK28 (same warhead as the Mk18 and 4000 yards/19.6kn) and now we have a useful torpedo.

As far as I can determine, unlike the mk16 which was never used in combat, the mk28 did reach combat units. I am thinking that a mod that would introduce the Mk28 in 1944 would be really useful and more historically accurate than including the mk16 in the game.

Cowboy40 · 09-28-13, 02:26 AM

I know this is an old post, but some thoughts have to be given to the Mk. 27 that has been mentioned.

Fisrt off, Mk. 27 was a defensive weapon. It was meant to be used against surface ships that were attacking the carrying submarine. To achieve the best results fire the weapon when the closing destroyer is making a lot of noise and when you are about to dive. It gives that destroyer something to occupy its time with while you try your ..... to get the f...k out of its way.

The weapon had a range of 5,000 yards, but using it with that range was well not done. It was designed to arm itself at 250 yards after leaving the tube. It had a speed of only 12 knots. And of course it was a passive homing torpedo.

Even though its 95 lb Torpex warhead was small, the weapon did prove an effective one. 106 units were expended during the last year of the war in combat. It achieaved 33 hits with 28 being fatel to Japanese ships. Yes this number seems low, but you have to remember and think about just how many of those 106 torpedoes kept a US sub from becoming a loss. The 'true' value in the weapon is the fact it drove the enemy off....

Harmsway! · 09-28-13, 06:18 AM

Well that is interesting. Will it indeed arm itself after 250 yards in SH4? It might be handy to have a couple of those on board.

merc4ulfate · 09-28-13, 09:13 AM

It was devoloped based on a captured German G7e

21" (53.3 cm) Mark 28.
Ship Class Used OnSubmarines
Date Of Design1943
Date In Service1945
Weight2,800 lbs. (1,270 kg)
Overall Length20 ft 6 in (6.248 m)
Explosive Charge585 lbs. (265 kg) HBX
Range / Speed4,000 yards (3,650 m) / 19.6 knots
PowerElectric-Battery, seawater
GuidancePassive acoustic

Notes: A passive homing torpedo developed from the Mark 18 which in turn was developed from captured German G7e torpedoes. The USN considered motor and gear noises to be the most troublesome problem with the homing torpedoes, unlike the Germans, who regarded propellor noises as the worst problem. The Mark 18 was not a quiet design, so the Mark 28 used only one propellor and eliminated the tail gearing. There were four hydrophones on the curved part of the nose. In production from 1944-52 and remained in service until 1960.

Source: http://www.navweaps.com/Weapons/WTUS_WWII.htm

Generic Mod Enabler - v2.6.0.157
OpsMonsun_V705
OMv705_to_V720
OMv720_Patch5
OMEGU_v300
OMEGU_v300_Patch7
OM_Med_Env
OM_Harder_Escort_L2
UBM Missions
Popular German Music From The 30´s

08-16-13, 12:33 PM	#1
joefremont Loader Join Date: Apr 2013 Location: Near San Francisco Posts: 82 Downloads: 47 Uploads: 0	Mark 28 Torpedo Half way through my latest campaign I purchased a batch of mk27's and tried them out on a couple escorts and was extremely disappointed in the results, even when they hit they did not seam to phase them. After having finished an SH3 campaign and liking the German homing torpedo's I though about trying to import the T11 but then read about the MK28, which was based on the Mk18 and started production in 1944 and would probably have the same acoustic homing hardware as the Mk27, so using Silent 3ditor i tweaked the performance data for the MK27 to match the MK28 (same warhead as the Mk18 and 4000 yards/19.6kn) and now we have a useful torpedo. As far as I can determine, unlike the mk16 which was never used in combat, the mk28 did reach combat units. I am thinking that a mod that would introduce the Mk28 in 1944 would be really useful and more historically accurate than including the mk16 in the game.

09-28-13, 06:18 AM	#3
Harmsway! XO Join Date: Jul 2002 Location: Florida Posts: 400 Downloads: 126 Uploads: 0	Well that is interesting. Will it indeed arm itself after 250 yards in SH4? It might be handy to have a couple of those on board. __________________ ----------------------- Gene SH5 Quick Start Guide

09-28-13, 02:26 AM	#2
Cowboy40 Swabbie Join Date: Aug 2012 Posts: 9 Downloads: 43 Uploads: 0	I know this is an old post, but some thoughts have to be given to the Mk. 27 that has been mentioned. Fisrt off, Mk. 27 was a defensive weapon. It was meant to be used against surface ships that were attacking the carrying submarine. To achieve the best results fire the weapon when the closing destroyer is making a lot of noise and when you are about to dive. It gives that destroyer something to occupy its time with while you try your ..... to get the f...k out of its way. The weapon had a range of 5,000 yards, but using it with that range was well not done. It was designed to arm itself at 250 yards after leaving the tube. It had a speed of only 12 knots. And of course it was a passive homing torpedo. Even though its 95 lb Torpex warhead was small, the weapon did prove an effective one. 106 units were expended during the last year of the war in combat. It achieaved 33 hits with 28 being fatel to Japanese ships. Yes this number seems low, but you have to remember and think about just how many of those 106 torpedoes kept a US sub from becoming a loss. The 'true' value in the weapon is the fact it drove the enemy off....

09-28-13, 09:13 AM	#4
merc4ulfate DILLIGAF Join Date: Feb 2007 Location: florida Posts: 2,058 Downloads: 210 Uploads: 0	It was devoloped based on a captured German G7e 21" (53.3 cm) Mark 28. Ship Class Used OnSubmarines Date Of Design1943 Date In Service1945 Weight2,800 lbs. (1,270 kg) Overall Length20 ft 6 in (6.248 m) Explosive Charge585 lbs. (265 kg) HBX Range / Speed4,000 yards (3,650 m) / 19.6 knots PowerElectric-Battery, seawater GuidancePassive acoustic Notes: A passive homing torpedo developed from the Mark 18 which in turn was developed from captured German G7e torpedoes. The USN considered motor and gear noises to be the most troublesome problem with the homing torpedoes, unlike the Germans, who regarded propellor noises as the worst problem. The Mark 18 was not a quiet design, so the Mark 28 used only one propellor and eliminated the tail gearing. There were four hydrophones on the curved part of the nose. In production from 1944-52 and remained in service until 1960. Source: http://www.navweaps.com/Weapons/WTUS_WWII.htm Generic Mod Enabler - v2.6.0.157 OpsMonsun_V705 OMv705_to_V720 OMv720_Patch5 OMEGU_v300 OMEGU_v300_Patch7 OM_Med_Env OM_Harder_Escort_L2 UBM Missions Popular German Music From The 30´s