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2017-12-10

SUBMARINES  –  U-BOOT  TYPE  "XXI"

Type VIII
Type XXI
Type XXIX
S-655
S-574
P-629
–
–
–
Background
Background
Background
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TYPE XXI ATTACK SUBMARINE

Designed from the outset as a true submarine rather than a submersible vessel, the Type XXI attack submarine marked a leap forward in terms of performances and inspired several post-war designs like the Soviet "Whiskey" class or the French Narval.  After the war, a handful served with the Soviet Union till the mid fifties, and France operated one as late as 1967.

TYPE XXI IN ATLANTIC AIR COMBAT™

There are various submarines types referred to in AAC™, all being conventionally propelled.  The interest of referring to WWII vintage types is their AA artillery, and under that aspect the Type XXI is one among others.  More ships and more navies are at stake in the game than historically factual

SPECIFICATIONS

Then Type XXI stands as follows against its other WWII vintage German submarine, with both Type VIII and Type XXIX being fictional iterations :

Types

Qty

LOA Displ Speed Range nm Range Tube Tube Torp Mine Msl Gun Guns Guns Crew
    ~ Subm ~ sf/sm Surface Submerged Max Bow Stern  Qty TM – Main AA2 AA1 -

Type.VIIC

568

67 m

1050 t

6.2m 18/   8.kt

8 500/10.kt

80/  4.kt

220 m 4 1 14 26 –   88mm – 1Χ20mm 48

Type.VIIC41

91

67 m

1050 t

6.2m 18/   8.kt

8 500/10.kt

80/  4.kt

220 m 4 1 14 26 –   88mm 1Χ37mm 4Χ20mm 48

Type.VIII

Fake

77 m

1 250 t

6.5m 18/   7.kt

12 000/10.kt

64/  4.kt

230 m 4 2 22 44 – 105mm 1Χ37mm 4Χ20mm 52

Type.IXB

14

77 m

1 250 t

6.5m 18/   7.kt

12 000/10.kt

64/  4.kt

230 m 4 2 22 44 – 105mm – 1Χ20mm 52

Type.IXC

54

77 m

1 250 t

6.5m 18/   7.kt

12 000/10.kt

64/  4.kt

230 m 4 2 22 44 – 105mm – 1Χ20mm 52

Type.XXI

118

77 m

1 800 t

8.0 m 16/17.kt

15 500/10.kt

285/  6.kt

280 m 6 – 23 12 – – – 4Χ20mm 58

Type.XXIX

2

84 m

2 200 t

8.0 m 16/17.kt

15 500/10.kt

285/  6.kt

280 m 6 – 23 12 3 – – 4Χ20mm 58

Armament

Type LOA Weight Ψ Speed Filling Range

Illustrations : Weapons

Illustrations : Type VIII (GIF)

Gun –   20mm AA

C38 –

120 grm

– 450 rpm

22 grm

  3700 m

       –

Radar directed in AAC™ aboard XXI and XXIX

Gun –   30mm AA

M42 –

640 grm

– 150 rpm

104 grm

  4800 m

       –

       –

Gun – 105mm

C32 –

– lb

–   15 rpm

– lb

15350 m

       –

Naval gun only, not dual purpose

Torpedo

G7e 7.2 m

3 534 lb

21" 30 kt

640 lb

  5000 m

       –

Torpedo-Mine

TMA2 2.3 m

~650 lb

21" –

475 lb

–

2 per torpedo tube possible

Torpedo-Mine

TMB1 2.3 m

1 625 lb

21" –

1 230 lb

–

3 per torpedo tube possible

Torpedo-Mine

TMB2 2.3 m

1 625 lb

21" –

1 230 lb

–

       "

       "

Torpedo-Mine

TMB3 2.8 m

1 475 lb

21" –

925 lb

–

       "

       "

Torpedo-Mine

TMBS 2.6 m

1 600 lb

21" –

1 230 lb

–

2 per torpedo tube possible

Torpedo-Mine

TMC1 3.4 m

2 450 lb

21" –

2 050 lb

–

2 per torpedo tube possible

Torpedo-Mine

TMC2 3.4 m

2 200 lb

21" –

1 760 lb

–

       "

       "

German Vintage WWII Submarines in Atlantic Air Combat™  –  Real and Fictional Background

At the Potsdam Conference, the number of ex-German submarines to be shared between the main Allies (UK/USA/USSR) had been set at ten boats for each nation.  The Agreement was revised later however, and more boats were allowed.  In particular, the various nations where these vessels surrendered were entitled to claim them back, an opportunity various countries eagerly seized with essentially either Type VII or IX at stake.

Regarding the Type XXI, the situation was a little different.  Not only were there much less boats available, but the major victory powers initially expressed the views they would keep the type for themselves.  Their views evolved rapidly, and the agreement regarding ex-German subs was revised, allowing more boats than the thirty first allowed, but no specific provisions was made for the Type XXI.  The Soviet Union, United States, and the United Kingdom had their share, but after close examination, only the Soviet Union kept an real interest into them.  Then, they had put their hands on essentially intact assembly lines in Danzig, so they were confident they could maintain a small fleet beyond the trials phase.

So was not the situation with UK or the US.  The UK only kept one for themselves, redirecting as many as four to South Africa.  That was four times the number initially allocated to France, but only due to the lack of interest from both Australia and Canada.  When Australia realized that South Africa could actually maintain their quartet into a fully functioning flotilla, and expressed the wish to operate one at least there were not left to be issued.  Even the one used by the Royal Navy had been offered to France to supplement the S610 Rolant Morillot.  Their attention was then caught by the announcement that trials would be over soon with the two boats operated by the US Navy, and asked for a transfer.  The US government had no objection, but considering the amount of work put into both hull, they only agtreed to sell them, albeit at a friendly price

On the Eastern side, the settling in of the Cold War lead USSR to transfer a few ships to their ancient owner as the Volksmarine was created in 1956.  The fact that this was a blatant breach of the Potsdam Agreement was switfly disregarded.  Regarding the type XXI, here is how the naval situation stood in 1963 :

- Hull Operator Hull Name 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967

Events

Real/Fiction

–

XXI

U-2513

Australia

S-50

Revenge 1952 > > > > > > > > > > >

Surrender

Horten

45.05.09

XXI

U-3008

Australia

S-51

Reward 1952 > > > > > > > > > > >

Surrender

Kiel

45.05.11

XXI

U-2518

France

S-613

Roland Morillot 1946 1967 >> >> >> >> >> >> >> >> >> 1967

Surrender

Horten

45.05.09

XXI

U-3017

France

S-618

Jean Favreul

1946 > > > > > > > > > > >

Surrender

Horten

45.05.09

XXI

U-3535

Germany.E

D-1

(ex-R-1)

1956 > > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3536

Germany.E

D-2

(ex-R-2)

1956 > > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3537

Germany.E

D-3

(ex-R-3)

1956 > > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-2540

Germany.W

T-241

Wilhelm Bauer 1957 1984 >> >> >> >> >> >> >> >> >> >>

Scuttled

–

45.05

XXI

U-2502

South.Africa

S-90

Durban

1946 > > > > > > > > > > >

Surrender

Horten

45.05.09

XXI

U-2506

South.Africa

S-91

Hermanus

1946 > > > > > > > > > > >

Surrender

Bergen

45.05.09

XXI

U-2511

South.Africa

S-92

Knysna

1946 > > > > > > > > > > >

Surrender

Bergen

45.05.09

XXI

U-3514

South.Africa

S-93

Koeberg

1946 > > > > > > > > > > >

Surrender

Bergen

45.05.09

XXI

U-2533

Sweden

U-11

–

1946 > > > > > > > > > > >

Interned

Berga

45.05.12

XXI

U-2534

Sweden

U-12

–

1946 > > > > > > > > > > >

Interned

Berga

45.05.01

XXI

U-2535

Sweden

U-13

–

1946 > > > > > > > > > > >

Interned

Berga

45.05.01

XXI

U-2536

Sweden

U-14

–

1946 > > > > > > > > > > >

Interned

Berga

45.05.01

XXI

U-2529

USSR

B-27

–

1946 1957 > > > > > > > > > >

Surrender

Kristiansand

45.05.09

XXI

U-3035

USSR

B-28

–

1946 1958 1958 > > > > > > > > >

Surrender

Stavanger

45.05.09

XXI

U-3041

USSR

B-29

–

1946 1958 1958 > > > > > > > > >

Surrender

Horten

45.05.09

XXI

U-3515

USSR

B-30

–

1946 1959 >> 1959 > > > > > > > >

Surrender

Horten

45.05.09

XXI

U-3538

USSR

R-4

–

1948 1956 > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3539

USSR

R-5

–

1948 1956 > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3540

USSR

R-6

–

1948 1956 > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3541

USSR

R-7

–

1948 1956 > > > > > > > > > >

Captured

Danzig

45.03

XXI

U-3542

USSR

R-8

–

1948 1956 > > > > > > > > > >

Captured

Danzig

45.03

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