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2017-12-21

MISCELLANEOUS  –  PT-BOAT  TYPE  831

PT-Boat
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Background
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PT-Boats are secondary targets found either at sea or in rivers and lakes.  However secondary, these mischievous targets are Pernicious Temptations in the sense they are "overgunned" and all guns on board may be trained against air threats.

Motor Torpedo Boats, Schnellboots, Patrol-Torpedo Boats and other fast launches were widely manufactured before and during WWII, in particular Germany, United Kingdom, the United States to only mention those three.  After the war, soldiered on in various roles like the Air-Sea Rescue boats of the South African Navy or the vintage Schnellboots being re-introduced with the Danish Navy in the early fifties and or were remanfactured in the 1950s and 1960s, but then with different engines.

The AAC™ PT-Boat Type 831 is based on the Elco 80 ft PT-boats by Elco, 60 of which were sent to the USSR.  It will stand for them all, and the type will be available to many if not all navies, NATO, WAPA, NECO or NONA alike, either at sea or on rivers and lakes.

SPECIFICATIONS  -  ILLUSTRATION

However ressembling those of the Elco'80, below details are those for the AAC™ PTB-831, assembled for the purpose of determing the target behaviour and self-defense capacities.  Like the real thing it is propelled by aircraft type engines, three 1790 hp "Marlin-Pakar" V1651-68 (another AAC™ reference).

Types

Qty

LOA Displ Speed Speed Range Fuel Crew Torpedo Gun Gun Guns Gun
    ~ ~ ~ Cuise Max – Diesel – – AA1 AA2 AA3 AA4

PTB-831

~

80 ft 21.ft

56 t

23 kt 45 kt

1500 nm

3000.US 11 4Χ Mk13 2Χ2Χ50 cal 1Χ20mm 1Χ37mm 1Χ40mm

Armament

Type LOA Shell HEI RoF Speed Range Illustration  

Gun –  50cal  AA

M2HB –

45 grm

  2 grm

600 rpm 880 m/s 2000.m

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Gun –  20mm AA

OK70 –

120.grm

12.grm

450 rpm 830 m/s 2000.m

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Gun –  37mm AA

M04N –

608.grm

48.grm

150 rpm 610 m/s 3000.m

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Gun –  40mm AA

B406 –

2400.grm

115.grm

120 rpm 880 m/s 4000.m

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Torpedo

ASS13 4.18 m

2000.lb

625.lb

– 33.kn 3.nm

Pour mιmoire

The initial armament of the US PT-boats was centered around two pairs of .50 cal BMG, soon supplemented with the ubiquitous 20mm Oerlikon autocannon.  The installation on the fore deck of a M4 37mm guns salvaged from P-39 Aircobra aircrafts was first a field modification before being applied to factory production.  The addition of the even more powerful Bofors 40mm autocannon on the after deck came last.  AAC's PTB-831 mimicks this installation.
.50 cal BMG 20mm KAA 37mm M4 40mm Bofors L60
AAC™ M2HB AAC™ OK70 AAC™ M04N AAC™ B406
Feed belt 500 Feed Clip 60 Feed belt 30 Feed Clip 4
RoF rpm/@ 600 RoF rpm 450 RoF rpm 150 RoF rpm 120
Velocity m/s 880 Velocity m/s 830 Velocity m/s 610 Velocity m/s 610
Range metre 2000 Range metre 2000 Range metre 3000 Range metre 4000
Ammo gramme 45 Ammo gramme 120 Ammo gramme 608 Ammo gramme 2400
Filling gramme 2 Filling gramme 12 Filling gramme 48 Filling gramme 115

Operators

PT-boats were thus used by several operators well after the war, if only in small numbers.  In AAC™, PT-Boats might be attrition-free  targets, meaning that if a given game area might be cleared, it doesn't mean that particular adversary has exhausted its PTB resources.

Historical

Op Role

QTY

Type

Name

1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967
US

United States

Navy

MGB

20

PT-boat

Nasty new built

1963 1981 - - - - - - - 1963 >> >> >> >>
US

Cuba

Navy

~

2

PT-boat

–

1945 1965 >> >> >> >> >> >> >> >> >>
US

Norway

Navy

MTB

20

PT-boat

Tjeld new built

1960 1995 - - - - 1960 >> >> >> >> >> >> >>
US

USSR

Navy

~

60

PT-boat

–

1945 ?... > > > > > > >
US

Argentina

Navy

~

10

PT-boat

–

1948 1974 >> >> >> >> >> >> >> >> >> >> >> >>
US

Yugoslavia

Navy

MTB

85

PTB-831

Higgins 78"

1951 197+ >> >> >> >> >> >> >> >> >> >> >> >>
US

South Africa

Navy

ASR

11

Fast launch

R10 to R20

1944 1965 >> >> >> >> >> >> >> >> >>
DE

Norway

Navy

~

~

E-Boot

–

1945 1965 >> >> >> >> >> >> >> >> >>
DE

Denmark

Navy

~

~

E-Boot

–

1951 1965 >> >> >> >> >> >> >> >> >>
DE

Spain

Navy

~

~

E-Boot

–

1940 1972 >> >> >> >> >> >> >> >> >> >> >> >>

In AAC™

United States Canada United Kingdom Iceland Norway Denmark Germany - FRG - Federal Republic of Germany Netherlands Belgium Luxembourg France Spain Portugal Senegal South Africa USSR - Soviet Union Germany - DDR - Deutsche Demokratische Republik Poland Cuba Sweden Finland Ireland Austria Switzerland Yugoslavia Argentina Brazil Chile Uruguay
   
20 10 20 06 63 42 46 15 15 06 30 10 10 03 10 90 54 30 36 25 25 06 09 12 85 10 10 04 06
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