Less air patrols for SH3 1.4!!!

[Silverfox18]

Thank God gizzmo...I hope it works! may solve some of the problems.

[Seaboy]

I suppose my only complaint about air patrols was being attacked in the Irish Sea by up to 6 to 7 bombers at a time in 1943. I don't think they had that many aircraft of that type that could be devoted to one attack on one u-boat. On the other hand - it was fun.

[Jungman]

Did you guys include this fix for a small but nasty bug in the Wellington airplane I found a few months ago?

The radar is removed after June 1944!!!

The entry should have been added in to fix it.

File ALB_Wellington.sns in SH3\data\air


[Sensor 1]
NodeName=O01
LinkName=AI_Visual
StartDate=19380101
EndDate=19481231 ; Should be 19451231 but has no effect.

[Sensor 2]
NodeName=R01
LinkName=ASVMarkII
StartDate=19420401
EndDate=19430601

[Sensor 3]
NodeName=R01
LinkName=ASVMarkIII
StartDate=19430601
EndDate=19440601 ; this is the end of stock file :doh:

[Sensor 4] ; proposed fix that gives it radar after June 1944
NodeName=R01
LinkName=ASVMarkVII
StartDate=19440601
EndDate=19451231

[Pablo]

Did you guys include this fix for a small but nasty bug in the Wellington airplane I found a few months ago?

The radar is removed after June 1944!!!

The entry should have been added in to fix it.

File ALB_Wellington.sns in data\sea


[Sensor 1]
NodeName=O01
LinkName=AI_Visual
StartDate=19380101
EndDate=19481231 ; Should be 19451231 but has no effect.

[Sensor 2]
NodeName=R01
LinkName=ASVMarkII
StartDate=19420401
EndDate=19430601

[Sensor 3]
NodeName=R01
LinkName=ASVMarkIII
StartDate=19430601
EndDate=19440601 ; this is the end of stock file :doh:

[Sensor 4] ; proposed fix that gives it radar after June 1944
NodeName=R01
LinkName=ASVMarkVII
StartDate=19440601
EndDate=19451231
Hi!

RUb 1.45 has the following entry for Wellington sensors:

[Sensor 1]
NodeName=O01
LinkName=AI_Visual
StartDate=19380101
EndDate=19481231

[Sensor 2]
NodeName=R01
LinkName=ASVMarkII
StartDate=19420401
EndDate=19430601

[Sensor 3]
NodeName=R01
LinkName=ASVMarkVI
StartDate=19430601
EndDate=19451231

My research indicates several variants of the Vickers Wellington bomber were produced for RAF Coastal Command (maritime and ASW patrol) during the course of the war. Of these,
394 Wellington G.R. Mk. VIII bombers were equipped with ASV Mk. II radar; some night variants with Leigh lights
180 Wellington G.R. Mk. XI bombers were equipped with ASV Mk. II or Mk. III radars.
58 Wellington G.R. Mk. XII bombers were equipped with ASV Mk. III radar and Leigh lights
841 Wellington G.R. Mark XIV bombers were equipped with ASV Mk. III and Leigh lights
I am not familiar with an "ASV Mark VI" or "ASV Mark VII" radar, although there were Air Intercept (AI) Mark VI and AI Mark VII radars, I don't know they would work to find a submarine. Assuming the SH3 "MarkIII" is the same as the real-life "Mk. III" you might want to use a Mk. III starting in 1943 instead of a "Mark VI", "Mark VII", or some such.

Pablo

[Jungman]

That was the other compressed fix, merging 43 to 45 together and going with a middle ground radar upgrade. Just match somewhat the rest of the radar equiped airplanes.

I see it is included. The stock entry is empty after June 1944.

[HW3]

IUB 1.02 has this for the Wellington.

[Sensor 1]
NodeName=O01
LinkName=AI_Visual
StartDate=19380101
EndDate=19481231

[Sensor 2]
NodeName=R01
LinkName=ASVMarkII
StartDate=19420401
EndDate=19430601

[Sensor 3]
NodeName=R01
LinkName=ASVMarkVI
StartDate=19430601
EndDate=19451231

[Gammel]

Thx for that Wellington fix.
I was wondering never beeing attacked by that plane...



To avoid that huge bomber formations attacking the sub i´ve changed my AirBase.cfg files to something like that:

[Unit]
ClassName=LargeAirBaseGB
UnitType=406
MaxSpeed=0.000000
MinSpeed=0.000000
Length=1
Width=1

[AirGroup 1]
StartDate=19380101
EndDate=19401225
Squadron1Class=FBHurricaneMk1
Squadron1No=18
Squadron2Class=LBSSunderlandMKIII
Squadron2No=2;12
Squadron3Class=LBSWalrus
Squadron3No=2;6

[AirGroup 2]
StartDate=19401226
EndDate=19430510
Squadron1Class=FBHurricaneMk1
Squadron1No=18
Squadron2Class=LBSSunderlandMKIII
Squadron2No=2;12
Squadron3Class=LBSPBYCatalina
Squadron3No=2;6

[AirGroup 3]
StartDate=19420401
EndDate=19430510
Squadron1Class=FBHurricaneMk1
Squadron1No=18
Squadron2Class=LBSSunderlandMKIII
Squadron2No=2;12
Squadron3Class=LBSPBYCatalina
Squadron3No=2;6
Squadron4Class=LBWell
Squadron4No=2;4

[AirGroup 4]
StartDate=19430511
EndDate=19451231
Squadron1Class=FBHurricaneMk1
Squadron1No=18
Squadron2Class=LBSSunderlandMKIII
Squadron2No=2;12
Squadron3Class=LBB24Liberator
Squadron3No=2;12
Squadron4Class=LBWell
Squadron4No=2;12

after the change i was never attacked by more than 2 bombers at once so far...

[John Pancoast]

Gizzmoe,

I'm not a expert on this. Do you think the allies have directed a heavy bomber to attack a single uboat? Like I said I don't know nothing about this, it's only my opinion. What you think?

Rubini.

Iirc, there's even a photo of one hitting/sinking a boat, in the book "Black May".

[Scire]

Hunting in the Bay of Biscay: November 1942 - October 1943


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While AAF antisubmarine units played a minor role in the Battle of the Atlantic, they made a far greater contribution in assisting British forces on patrol in the Bay of Biscay. To reach patrol areas in the Atlantic from July 1940 until October 1943, almost a year after the AAF ceased antisubmarine operations, most German submarines sailed from four French ports through the Bay of Biscay. From the west coast of France and the north coast of Spain, the bay extends to Ushant Island off the coast of Brittany, France, south to Cape Finisterre at the northwest tip of Spain. Approximately 300 miles from north to south and 120 miles east to west, the Bay of Biscay was relatively confined transit area that could be patrolled by long-range aircraft flying from bases in Britain.
The RAF Coastal Command, in charge of Britain's aerial antisubmarine effort, patrolled the bay as frequently as possible. To assist the British, the AAF sent antisubmarine groups at two different times. The first joined the RAF Coastal Command in February 1943, before moving to North Africa. The second operated over the bay from July through October 1943.
By the fall of 1942, the Germans had equipped their submarines with a warning device to detect longwave radar and thus avoid being caught on the surface. The RAF Coastal Command immediately requested a contingent of B-24 Liberators equipped with microwave radar, which the enemy could not detect. In response, the AAF sent the 1st Antisubmarine Squadron, under the command of Lt. Col. Jack Roberts, to Great Britain in November.
While stationed at St. Eval, Cornwall, the 1st Antisubmarine Squadron operated under the control of RAF Coastal Command. It flew its first mission on November 1, long before reaching its full strength of sixteen aircraft. Subsequent flights were nominally in support of Operation Torch, the Allied invasion of North Africa. They were, however, essentially training missions that extended up to six hundred miles into the Atlantic Ocean south and west of the British Isles. The squadron quickly became familiar with the British methods of flight planning, communications, patrol patterns, and administration and learned to use the new microwave radar equipment aboard the B-24s. Soon the aircrews were accustomed to long and exhausting missions of ten to twelve hours.
Two months later, in January 1943, the 2d Antisubmarine Squadron joined the 1st at St. Eval. The two squadrons became the 1st Antisubmarine Group (Provisional) on January 15, the day before their first command patrol.
Augmented by the American squadrons, the RAF Coastal Command planned a nine-day offensive in the bay to coincide with the February return of German submarines from convoy battles in the North Atlantic. Beginning on February 6, the command flew over three hundred missions, which resulted in nineteen sightings and eight attacks. With the advantage of microwave radar, the American B-24s accounted for fifteen sightings and five attacks. On the 10th, "Tidewater Tillie," a Liberator of the 2d Antisubmarine Squadron, piloted by 1st Lt. W.L. Sanford, sank U-519 about six hundred miles west of Lorient, France--the first U-boat kill by the AAF in the EAME theater.
In the four months that American B-24s were stationed in Great Britain, their aircrews flew 1,966 hours in 218 missions, sighting twenty German submarines, attacking eleven, and sinking one. On the average, they made one sighting for every 98.3 hours of flying time and one attack for every 177.8 flight hours. The Americans achieved these results despite losses from enemy aircraft attacks.
In February, after Dönitz complained that his submarines received inadequate air support, the Luftwaffe increased the number of medium-range, twin-engine fighters
flying cover for the submarines crossing the Bay of Biscay. The 1st Antisubmarine Group encountered Ju 88s on four occasions and damaged at least two enemy aircraft, losing one B-24 in aerial combat; two other Liberators failed to return from their missions and may have been shot down by Ju 88s. Overall, the group lost
sixty-five crew members and seven B-24s between November 1942 and March 1943. The Americans flew the last patrol over the Bay of Biscay on March 5, before deploying to North Africa.
In April the continued pressure from the RAF Coastal Command led Dönitz to change his methods of operations. U-boats crossing the Bay of Biscay were ordered to submerge at night, surface during the day to recharge batteries and travel more swiftly, and fight any attacking aircraft. The last tactic proved to be a serious mistake. A month later, the British sank seven submarines in sixty-four attacks, at a cost of six aircraft. The German commander did not realize the Allies' uncanny ability to locate submarines with microwave radar and Ultra intelligence. On June 1, he ordered the submarines to cross the bay in groups, believing that their combined antiaircraft flak would drive off the British aircraft. Two weeks later, the Germans lost another U-boat, and two more were severely damaged. The commander also ordered the submarines to cross the bay submerged and to surface only to charge batteries, but that practice seriously harmed crew morale at the beginning of their patrols. Slowing down the submarines shortened their time on battle stations once they cleared the bay allowed the RAF Coastal Command more time to locate them when they surfaced. Dönitz also failed to revoke the fatal order that required surfaced submarines to fight off attacking aircraft.
The additional antisubmarine B-24s that Sir John Slessor, commander of the RAF Coastal Command, had been requesting from the United States since March finally arrived in late June 1943. The AAF Antisubmarine Command sent the 4th and 19th Antisubmarine Squadrons directly from Newfoundland to St. Eval. Benefiting from the experience of the squadrons based there earlier in the year, the 4th and 19th were organized on July 8 as the 479th Antisubmarine Group under Col Howard Moore. Administrative support came from the Eighth Air Force, and the group served under the operational control of the RAF Coastal Command. In August, the 479th moved from St. Eval, the RAF's main base for the Bay of Biscay operations, to a less-crowded base at Dunkeswell, approximately seventy miles to the east. One month later, the group received the aircraft and air echelon of the 6th and 22d Antisubmarine Squadrons.
Having received renewed support and reinforcement, the Coastal Command planned more intensive operations over the Bay of Biscay, using aircraft and surface vessels no longer needed on the convoy routes. The Allies soon developed an effective killer-hunter operation. The Coastal Command arranged new search patterns, having aircraft fly parallel courses three times each day in a wide area north and northwest of Cape Finisterre. The AAF B-24s patrolled the southernmost areas near the coast of Spain.
The revitalized American patrols found good hunting. On July 13, the 479th Antisubmarine Group flew its first mission over the bay. Only a week later, 1st Lt. C. F. Gallmeir, a B-24 pilot from the 19th Antisubmarine Squadron, bombed U-558 approximately 150 miles north of Cape Finisterre. The U-boat's crew abandoned ship just as the B-24, flying on three engines, turned toward its home base. The same day, near the area of Gallmeirer's attack, a pair of German submarines shot down an AAF Liberator. All aboard were killed. That was the only AAF B-24 lost to U-boat antiaircraft fire in the Bay of Biscay offensive because enemy submarines usually failed to seriously damage the attacking aircraft before being forced to submerge. On July 28, a B-24 of the 4th Antisubmarine Squadron sank U-404, two hundred miles north of Cape Finisterre.
As large numbers of aircraft and naval vessels were released from North Atlantic convoy duty in mid- 1943, the pace of the deadly killer-hunt operations in the Bay of Biscay quickened. When a patrolling aircraft spotted and unsuccessfully attacked a German submarine, it radioed the quarters, which dispatched a force of ships and aircraft to maintain contact with the submarine and attack as opportunity arose.
In a single engagement on one exceptional day, the Allies' killer-hunt tactics netted three German submarines in the Bay of Biscay. On July 30, 1943, an AAF B-24 Liberator spotted three U-boats almost 150 miles north of Cape Finisterre. Short on fuel, the pilot radioed the position and brought to the area one British Sunderland, a four-engine long-range bomber; another AAF B-24; and a U.S. Navy flying boat. These five aircraft attacked the three submarines through a barrage of antiaircraft fire. Eventually, a Halifax ruptured the pressure tank of U-462, and the other Halifax left. Soon, a Royal Australian Air Force Sunderland arrived to attack and to sink U-461. As a British task force of surface vessels sailed onto the scene, another Halifax destroyed U-452. The warships then blew up the submerged U-504 with depth charges. This effort, involving aircraft and ships of five Allied armed services, epitomized joint tactical cooperation in antisubmarine warfare. Three days later, about 250 miles norht near the northwest area of the cape, another B-24 of the 4th Antisubmarine Squadron sank U-706--the last kill scored by the AAF B-24s in the bay. The 479the Antisubmarine Group ended operations with only one more sighting and unsuccessful attack between early August and October 31, 1943.
Instead of attacking submarines, the AAF B-24 Liberators spent August and September fighting German aircraft. For two months, the Luftwaffe provided enough air coverage to threaten Allied aerial control over the Bay of Biscay. Although the B-24 aircrews avoided combat whenever possible, enemy aircraft aggressively pursued the fight. Ju 88s, usually flying in groups of six or more, accounted for a dozen Allied aircraft lost, including two AAF B-24s, and fourteen American lives. Still, the Luftwaffe could not drive the Allies from the bay.

All in all, the Bay of Biscay operations met the RAF Coastal Command's expectations. The 479th Antisubmarine Group flew an average of only 54 hours per sighting in July 1943, an exceptional record compared with most AAF Antisubmarine Command patrols, which flew hundreds of hours off the east coast of the United States and in the Caribbean Sea without a single sighting. From July 13 to August 2, the 479th's aircrews sighted twelve submarines, attacked seven, and sank three. During that time, the relatively small area of the bay accounted for about a quarter of all Allied attacks on U-boats and almost 40 percent of those destroyed. The entire Allied offensive, from mid-May to early August, destroyed twenty-eight U-boats and severely damaged seventeen others, forcing them to return to home port for repairs. Seldom could a U-boat surface in or near the Bay of Biscay without being spotted by an aircraft. German submarine forces could not recover the initiative they had lost during the convoy battles in the North Atlantic earlier in the year.

(Source: www.usaaf.net )