PT-109

PT-109

PT-109

USA

II Rank

Battle rating:

AB	RB	SB
1.7	1.7	1.7

Class:

PREMIUM

Motor torpedo boat

Boat

Purchase:Bundle or Gift

Show in game

Description

The Elco 80 ft PT-109 is a premium gift rank II American motor torpedo boat with a battle rating of 1.7 (AB/RB/SB). It was one of the earliest pre-orders offered to access the fleet closed beta test before being removed from the store with the wide-release of the closed beta test in Update 1.79 "Project X".

General info

Survivability and armour

Armourfront / side / back

Hull40 mm (wood)

Superstructure15 mm (wood)

Number of section3

Displacement38 t

Crew12 people

The hull structure of the boat has no armour at all. The only armour present on this boat is the bridge that contains 6 mm of antifragmentation armour, and the 13 mm rolled homogeneous armour of the 20 mm mount.

Most of the front hull is open space, and so there are no critical components that could be hit if rounds come in across at the front end. However, from the bridge on backwards is the engine, ammo, torpedoes, and fuel all scattered around that could be easily hit, ignited, or detonated.

Mobility

Speedforward / back

AB106 / 30 km/h

RB76 / 22 km/h

Write about the ship's mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward and reverse speed.

Mobility Characteristics
Game Mode	Upgrade Status	Maximum Speed (km/h)		Turn Time (s)	Turn Radius (m)
		Forward	Reverse
AB	Stock	___	___
	Upgraded	106	30
RB/SB	Stock	___	___
	Upgraded	76	22

Modifications and economy

Repair cost

AB708

RB1 261

Crew training4 800

Experts32 000

Aces250

Research Aces440 000

Reward for battleAB / RB / SB

2 × 80 / 110 / 50 %

2 × 124 / 124 / 124 %

Modifications

Seakeeping	Unsinkability	Firepower
Dry-Docking Rudder Replacement Propeller Replacement Engine Maintenance	Damage Control Division Fire Division Smokescreen New Pumps	.50 AP belt 20 mm HE magazines Auxiliary Armament Targeting .50 APIT belt 20 mm AP magazines Primary Armament Targeting Artillery Support

Armament

Primary armament

2 х Turret2 x 12.7 mm Browning AN-M2 machine gun

Ammunition4000 rounds

Belt capacity200 rounds

Fire rate577 shots/min

Vertical guidance-7° / 60°

Two turrets with twin-mounted AN-M2 machine guns are had around the bridge area. Despite their full-flexible 360 degree traverse, limitations with the boat structure will severely restrict their fire angles against enemy boats.

12.7 mm AN-M2 (x4)
Turrets (Bow to stern)
	Front turret (x2)	Rear turret (x2)
Vertical guidance	-7°/+60°	-7°/+60°
Horizontal guidance	±180°	±180°
Ammo capacity (Belt capacity)	4,000 (200)
Rounds per turret	2,000

• Universal: API-T · AP · I · AP
• .50 AP belt: API-T · AP · AP · AP
• .50 APIT belt: API-T · API-T · API-T · I

Penetration statistics
Ammunition	Penetration @ 0° Angle of Attack (mm)
	10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
AP	29	28	25	20	17	14
I	2	2	2	2	2	2
API-T	28	27	23	19	15	11

Shell details
Ammunition	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
						0%	50%	100%
AP	856	0.05	-	-	-	47°	56°	65°
I	944	0.04	0.02	0.3	1.2	47°	56°	65°
API-T	887	0.04	-	-	-	47°	56°	65°

Secondary armament

Turret20 mm/70 Oerlikon Mk.II autocannon

Ammunition1800 rounds

Belt capacity60 rounds

Fire rate450 shots/min

A single 20 mm Oerlikon cannon is mounted at the stern of the boat.

20 mm Oerlikon Mk.II
Vertical guidance	-5°/+60°
Horizontal guidance	±180°
Ammo capacity (Belt capacity)	420 (60)
Rate of fire (Rounds/min)	450

• Universal: HEF-T · HEF-I · AP-T
• 20 mm HE: HEF-T · HEF-I · AP-T · HEF-I
• 20 mm AP: AP-T · AP-T · AP-T · HEF-I

Penetration statistics
Ammunition	Penetration @ 0° Angle of Attack (mm)
	10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
HEF-T	2	2	2	2	2	2
AP-T	34	32	24	17	12	8
HEF-I	2	2	2	2	2	2

Shell details
Ammunition	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
						0%	50%	100%
HEF-T	830	0.12	0	0.1	6.57	79°	80°	81°
AP-T	830	0.12	-	-	-	47°	60°	65°
HEF-I	830	0.12	0	0.1	11.17	79°	80°	81°

Additional armament

Setup 14 x 21 in wet-heating Mk.8 torpedo

The PT-109 is armed with four 21 in wet-heating Mk.8 torpedoes, which are mounted with two on the port side and two on the starboard side. Both are angled from the front and so requires angling to get onto target.

21 in wet-heating Mk.8 torpedo
# on ship	Mass (kg)	Maximum speed in water (km/h)	Travel distance (km)	Depth stroke (m)	Arming distance (m)	Explosive type	Explosive mass (kg)
4	1,252	50	9.14	1.0	50	TNT	146

Usage in battles

Describe the technique of using this ship, the characteristics of her use in a team and tips on strategy. Abstain from writing an entire guide – don't try to provide a single point of view, but give the reader food for thought. Talk about the most dangerous opponents for this vehicle and provide recommendations on fighting them. If necessary, note the specifics of playing with this vehicle in various modes (AB, RB, SB).

Pros and cons

Pros:

• Slender PT boat profile
• Quite speedy at flank speed
• Open space in front could let some lucky shots pass through harmlessly

Cons:

• Limits in gun traverse means, despite able to traverse 360 degree, there are many angles where only one turret could aim onto target
• Both primary armaments are only able to be used on ship targets at ship starboard side
• Torpedoes at each side are split at an angle, requires manoeuvring to get a decent aim at a target in front

History

Construction

PT-109 was laid down by Elco (Electric Launch Company) in Bayonne, New Jersey, on 4 March 1942. It was launched on 20 June 1942, delivered to the U.S. Navy on 10 July, and completed on 19 July.

Initial Service

Under the command of CDR Henry Farrow, USN, PT-109 was first attached to Motor Torpedo Boat Squadron FIVE (MTBRon5). MTBRon 5 was assigned to the Panama Sea Frontier beginning in September 1942. On 22 September 1942, PT-109 was transferred to MTBRon 2, with her new commanding officer LT George A. Brackett, USNR. MTBRon 2 was transferred to the South Pacific in 1942. There, the squadron took part in the Solomons campaign, fighting night actions against the Japanese Tokyo Express with the goal of defending the US-held Guadalcanal. MTBRon 2 was at Tulagi island on 23 April 1943, when LTJG John F. Kennedy took command of the PT-109.

Media

Skins

• Skins and camouflages for the PT-109 from live.warthunder.com.

Images

• 

  PT-109 featured on in-game art

Videos

The Shooting Range #13 - Pages of History section at 03:36 discusses the PT-109.

See also

• Elco 80 ft PT-103 - Head of the ship-class that PT-109 was built off.

External links

• [Devblog] PT-109: Kennedy's Torpedo Boat

Electric Launch Company (Elco) Ships
Patrol Torpedo Boats (PT)
77' PT	PT-20 · PT-59
80' PT	PT-103 · PT-109 · PT-174 · PT-314 · Thunderbolt (PT-556) · PT-565