Diesel Kriegsmarine

Hey Tom! How goes retirement from Operation Unicorn?

The first 48 hours it was a big relief finally finishing it (marred a little by the predictable demand for maps). Once I finished the maps there was a period of oh 4-5 days when I sort of missed the predictable routine it provided.
 
The first 48 hours it was a big relief finally finishing it (marred a little by the predictable demand for maps). Once I finished the maps there was a period of oh 4-5 days when I sort of missed the predictable routine it provided.

That OU was a major effort Tom, incredible that you saw it through to completion. If you ever find the motivation I would really try to clean it up a bit and turn it into e-book(s) for Amazon. I doubt it would make much money but it would be cool to have out there.
 
West to East Convoys

Convoy HX 126 Departed Halifax on May 10-1941 and arrived Liverpool on the 28th
Convoy HX 127 Departed Halifax on May 16-1941 and arrived Liverpool on June 2
Convoy HX 128 Departed Halifax on May 20-1941 and arrived Liverpool on June 6
--Escort includes HMS Revenge
Convoy HX 129 Departed Halifax on May 27-1941 and arrived Liverpool on June 12
Convoy SC 31 Departed Halifax on May 9-1941 and arrived Liverpool on the 30th.
Convoy SC 32 Departed Halifax on May 19-1941 and arrived Liverpool on June 7

East to West Convoys
Convoy OB 324 Depart Liverpool on 18 May 1941 Dispersed 53N 29.30W on 27 May 1941
Convoy OB 325 Depart Liverpool on 21 May 1941 Dispersed on 29 May 1941
Convoy OB 326 Depart Liverpool on 22 May 1941 Dispersed 50.03N 30.37W on 29 May 1941
Convoy OB 327 Depart Liverpool on 28 May 1941 Dispersed 52.42N 22.18W on 1 June 1941
 
The first 48 hours it was a big relief finally finishing it (marred a little by the predictable demand for maps). Once I finished the maps there was a period of oh 4-5 days when I sort of missed the predictable routine it provided.

Concur with Mike, it's one of the finest timeline's I've read. I was a loyal follower after I found it.
 
Operation Rheinübung Part 3, (May 25th To 28th, 1941)
Operation Rheinübung Part 3, (May 25th to 28th, 1941)

By mid-morning on the 25th it was clear that the German Battleships Scharnhorst and Gneisenau were heading out to join with Bismarck and Graf Zeppelin. It represented an even greater concentration of combat power in the Atlantic for the Germans than Operation Berlin the previous January to March. With the destruction of Hood along with the crippling of King George V and Prince of Wales only two capital ships capable of over taking the Germans were Renown and Repulse. The success of Graf Zeppelin during the battle of Denmark straight demonstrated for one and all the power of modern aircraft. Ark Royal was steaming north to try to intercept the Germans while Victorious was newly commissioned with only a fraction of her air group. The problems of Prince of Wales were a stark warning against rushing newly commissioned ships into action. There was great debate over how to proceed. In London Churchill broke the deadlock at the Admiralty, the Germans could not be allowed to roam the Atlantic uncontested.

Admiral Tovey with reluctance detaches Victorious and Repulse with orders to join up with Force H that has Ark Royal and Renown under Admiral Somerville. Tovey instructs Somerville to avoid action until his expanded command is concentrated. Back in London Churchill is aggravated by the restriction Tovey has placed but makes no move to override the admiral.

***

During the evening of the 25th into the 26th Battlegroup Ciliax encounters the west bound Convoy OB 325. The are 20 merchantmen and five escorts in the convoy. At dawn on the 26th the Germans begin their attack over the next five hours they sink or capture 11 ships total, 9 merchantmen and two escorts. The rest of the convoy scatters. The nearby convoy OB 326 hearing the reports of German warships at once scatters. To the south there is little that Admiral Somerville can do but continue to try to close the distance; the Germans are over 300 miles away when they begin their attack.

Battlegroup Lütjens meets up with tankers on the 26th and refuels. Radio intercepts suggest there are several convoys to the south.

On the 27th scouts from Graf Zeppelin locate a large convoy, it is HX 128 escorted by HMS Revenge with 40 merchantmen. During operation Berlin Scharnhorst and Gneisenau another convoy had been located that also had a battleship escort. Then Lütjens refused to engage but this time he has an aircraft carrier. The two combat missions had cost Graf Zeppelin nine Fi-167s and six Ju-87s lost. Plus, a Bf-109 had landed hard and was down for repair. With other aircraft damaged and several unavailable. At this point the airwing was little more than one gruppe each of dive and torpedo bombers. A strike was readied and as soon as the target was within range was launched. 9 Fi-167, 15 Ju-87 and escorted by 8 Bf-109 conducted the most distant strike for Graf Zeppelin, 120+ miles.

The attack on HX-128 began just after 1 PM local time. The Ju-87s dove out of the clouds. It appeared that the British were surprised as there was little anti-aircraft fire and the battleship was sailing in a straight line. Despite all of these advantages the dreaded Stuka’s failed to land a single direct hit just two near misses. As the bi-plane torpedo bombers began their attack the British now alerted to the danger began to react. Of the nine torpedos dropped only one hit but it did little damage. The rest of the dive bombers scored three hits, one exploded in the upper works and one fails to explode as it smashes through three decks. The worst damage done was by a hit near one of the port twin 4” gun houses. Shrapnel sliced into the gun house setting off ready munitions and creating a blazing fire laced with explosions as 4” shells cooked off. None of German aircraft were lost but several were damaged.

The previous success had driven moral and expectations sky high among the German airmen. With the Great War battleship not in obvious distress beyond the one fire it was a bit of a letdown. As Oberstleutnant Hagan circled at a distance his first impression was one of disappointment but as all of the strike checked in his mood brightened. The Luftwaffe officer gave a salute, “We will see you again…”

***

On the way back to Graf Zeppelin Hagan considered the situation. How long to return to the carrier, land, rearm and conduct another attack. The worry would be the return flight from that second attack even in these northern waters in near summer the sun did set for a few hours. There should be enough time.

***

Hagan worries ended up being for nothing. A recon flight by a Ar 196 from Prinz Eugen only found a few merchantmen. The convoy had scattered and the British battleship disappeared. Navigation over open water especially at great distant was difficult. The German float plane was in the wrong spot. Plus, in the two hours since the attack HMS Revenge, along with most of the convoy, had gone south at best possible speed.

***

On the 28th at last Ark Royal and Victorious were within range of Battlegroup Ciliax. Nine swordfish torpedo bombers from Victorious and sixteen from Ark Royal. The British homed in on a swordfish shadowing the Germans. As the three British torpedo squadrons began their attack their batteries of 128mm guns opened up. One swordfish was lost and another had its torpedo hangup. Twenty three torpedoes were dropped in the water in three waves. Two hits were archived one on Gneisenau and one on a escorting destroyer. The damage to the battleship was minor causing some leaks but the hit on the destroyer blew off the bow just forward of the 128mm gun house.

The destroyer was abandoned and her crew taken off.

***
 
I concur with the decision that Victorious join Force H. There is something of an inconsistency in the narrative though. At one point you say the Stukas only scored 2 near misses on Revenge but then later you have them scoring 3 hits. I am guessing it is one staffel had the first result and the other attacking later had the more impressive result.

In OTL Ark Royal launched a strike with Swordfish using torpedoes with magnetic detonators. This strike mistakenly attacked Sheffield and scored no hits in large part because the detonators malfunctioned which the airgoup commander suspected afterwards and he went to using contact detonators for the next strike. Did this happen here. If not was Ark Royal's Swordfish using magnetic detonators in the attack on Battlegroup Ciliax?
 
Attack on revenge is three waves, Ju-87, Fi-167 and Ju-87.

I didn't even think about the problem with the British torpedoes.
 
I was wondering about the miss rates. IIRC the German hydrophone were quite effective and their 30 knots wessels repeatedly dodged many torpedoes which makes sense as their speed relative to the torpedoes is quite significant. Revenge though....
PS. Feels like you have been repaying some of the german fortune after the sinking of hood? You didn’t need that IMHO,but its a great read nevertheless.
 
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I was wondering about the miss rates. IIRC the German hydrophone were quite effective and their 30 knots wessels repeatedly dodged many torpedoes which makes sense as their speed relative to the torpedoes is quite significant. Revenge though....
PS. Feels like you have been repaying some of the german fortune after the sinking of hood? You didn’t need that IMHO,but its a great read nevertheless.

I tend to roll hot and cold on dice. The d6s for the attack on Revenge and the twins were a bunch of ones in this chapter. By the dice HMS King George V was sunk for example those attacks were all 5s and 6s.

Also at this point the Graf Zeppelins air group has been reduced in size and the British air groups are smaller period so over all combat power is reduced.

Michael
 
Looking a ship value, If there is an enemy raiding force around that includes an aircraft carrier, then your one ship capable of hurting the enemies surface unit needs to be protected. Therefore surround it with merchant ships to eat torpedoes. Though this will restrict violent maneuvers to dodge bombs it means that the Battleship's AA can concentrate on the Bombers.
 
Looking a ship value, If there is an enemy raiding force around that includes an aircraft carrier, then your one ship capable of hurting the enemies surface unit needs to be protected. Therefore surround it with merchant ships to eat torpedoes. Though this will restrict violent maneuvers to dodge bombs it means that the Battleship's AA can concentrate on the Bombers.

Convoy MV were usually slow 7-10 knots , is the capital ships really going to cruise that slow?

Where are all the wolf packs?

WOLFPACK WEST looks like a candidate?

https://uboat.net/ops/wolfpacks/3.html
 
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Two days without an update. Maybe, if not a map could we have a description of the battlrgroups positions and the convoys. Also, I assume the Germans have lined up submarines and FW-200’s to prey on the scattering convoys. What are their overall losses?
 
How far along is the second German carrier (Peter Strasser?). Looking at the time it took to complete Graf Zeppelin, we're probably looking at full completion around early summer 1942, but could it be completed sooner now they have experience with Graf Zeppelin?

Also, what is the German plan once Rheinübung is completed? Do they try to bully their way back through the G-I-UK gap, or will they rebase to France?
 
How far along is the second German carrier (Peter Strasser?). Looking at the time it took to complete Graf Zeppelin, we're probably looking at full completion around early summer 1942, but could it be completed sooner now they have experience with Graf Zeppelin?

Also, what is the German plan once Rheinübung is completed? Do they try to bully their way back through the G-I-UK gap, or will they rebase to France?
You would assume production to have been uninterrupted ittl, and they dont have to repeat the fitting out mistakes. So probably ready soon. And the pilots would be trained and ready to replace those lost on GZ.
PS. Off course that would mean a shortage of experienced pilots for Peter Strasser.
 
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