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| − | {{Specs-Card|code=us_elco_77ft_pt20}}
| + | == Description == |
| | + | ''Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.'' |
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| − | == Description == | + | === Vehicles equipped with this weapon === |
| − | <!--''In the first part of the description, cover the history of the ship’s creation and military application. In the second part, tell the reader about using this ship in the game. Add a screenshot. If a beginner player has a hard time remembering vehicles by name, a picture will help them understand which ship is being discussed.''--> | + | <!-- ''List out vehicles that are equipped with the weapon.'' --> |
| − | [[File:GarageImage_{{PAGENAME}}.jpg|420px|thumb|left]]
| + | * {{Specs-Link|sa_341f}} |
| − | {{Break}}
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| − | The '''{{Specs|name}}''' is a rank {{Specs|rank}} American motor torpedo boat {{Battle-rating|1}}. It was introduced in [[Update 1.79 "Project X"]] as part of the fleet closed beta test.
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| | == General info == | | == General info == |
| − | === Survivability and armour ===
| + | ''Tell us about the tactical and technical characteristics of the cannon or machine gun.'' |
| − | <!--Talk about the vehicle's armour. Note the most well-defended and most vulnerable zones, e.g. the ammo magazine. Evaluate the composition of components and assemblies responsible for movement and manoeuvrability. Evaluate the survivability of the primary and secondary armament separately. Don't forget to mention the size of the crew, which plays an important role in fleet mechanics. Tips for preserving survivability should be saved for the "Use in battle" section.
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| − | If necessary, use a graphic template to show the most well-protected or most vulnerable points in the armour.-->
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| − | The 77 ft PT-20 has no areas with serious amounts of armour protection. The hull of the vessel consists of 40 mm thick ship wood and the bridge on top is made of 15 mm ship wood. Any projectile that hits ''will'' penetrate and deal damage including fragmentation and splash damage from nearby shells. The crew is 15 people which is about average for the PT-20's BR, although any prolonged engagement will likely end in destruction through the loss of the crew. The PT-20 has a total of 4 compartments, 3 for the hull and one for the bridge. The second section of the hull houses the fuel tanks and the third contains the three engines. Damage to the middle of the ship will often set fires or disable the mobility of the PT-20.
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| − | | |
| − | === Mobility ===
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| − | <!--Write about the ship’s mobility. Evaluate its power and manoeuvrability, rudder rerouting speed, stopping speed at full tilt, with its maximum forward speed and reverse speed.-->
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| − | {| class="wikitable" style="text-align:center"
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| − | |-
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| − | !colspan="3" | Mobility Characteristics
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| − | |-
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| − | ! colspan="3" |Weight (tons)
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| − | |-
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| − | | colspan="3" | 33
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| − | |-
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| − | !colspan="3" | Max Speed (km/h)
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| − | |-
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| − | !colspan="1" | Mode
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| − | !Stock
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| − | !Upgraded
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| − | |-
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| − | |''Arcade''
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| − | |78
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| − | |106
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| − | |-
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| − | |''Realistic/Simulator''
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| − | |65
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| − | |76
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| − | |-
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| − | |}
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| − | The 77 ft PT-20 is a very quick and agile vessel and is able to reach its top speed in under 15 seconds from a stopped position. A 180° turn can be performed in about 10 seconds when started at full speed, and a complete loop can be made in under 20 seconds. Half rudder deflection is achieved in 2 seconds and maximum deflection in around 10 seconds.
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| − | | |
| − | == Armament ==
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| − | === Primary armament ===
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| − | <!--Provide information about the characteristics of the primary armament. Evaluate their efficacy in battle based on their reload speed, ballistics and the capacity of their shells. Add a link to the main article about the weapon: <code><nowiki>{{main|Weapon name (calibre)}}</nowiki></code>.
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| − | | |
| − | Broadly describe the ammunition available for the primary armament, and provide recommendations on how to use it and which ammunition to choose.-->
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| − | | |
| − | {{main|AN-M2 (12.7 mm)}}
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| − | | |
| − | {| class="wikitable" style="text-align:center"
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| − | |-
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| − | ! colspan="6" | 2x [[AN-M2 (12.7 mm)|12.7 mm AN-M2]] (x2)
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| − | |-
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| − | ! colspan = "6" | Turrets
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| − | |-
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| − | ! || Port Turret || Starboard Turret
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| − | |-
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| − | ! scope="row" | Vertical guidance
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| − | | -5°/+65° || -5°/+65°
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| − | |-
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| − | ! scope="row" | Horizontal guidance
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| − | | ±180° || ±180°
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| − | |-
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| − | ! scope="row" | Ammo capacity
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| − | | colspan = "6" | 9,600
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| − | |-
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| − | ! scope="row" | Rounds per turret
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| − | | colspan = "6" | 4,800
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| − | |-
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| − | |}
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| − | | |
| − | Important to note is the fact that the main armament is unable to aim at targets on the water directly ahead due to the turrets being located just behind the bridge. Off to the side of the vessel, it is possible to aim one or both of the turrets and directly astern it is possible to use both.
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| − | | |
| − | ===== Ammunition =====
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| − | {| class="wikitable sortable" style="text-align:center" width="100%"
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| − | ! colspan="8" | Penetration Statistics
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| − | |-
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| − | ! rowspan="2" data-sort-type="text" | Ammunition
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| − | ! rowspan="2" class="unsortable" | Type of <br /> warhead
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| − | ! colspan="6" | '''Penetration''' '''''in mm''''' '''@ 90°'''
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| − | |-
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| − | ! 10m
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| − | ! 100m
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| − | ! 500m
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| − | ! 1000m
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| − | ! 1500m
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| − | ! 2000m
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| − | |-
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| − | | M20 || API-T || 31 || 30 || 25 || 21 || 17 || 14
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| − | |-
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| − | | M2 || AP || 33 || 32 || 27 || 23 || 19 || 16
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| − | |-
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| − | | M1 || I || 2 || 2 || 1.5 || 1 || 0.5 || 0
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| − | |-
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| − | |}
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| − | {| class="wikitable sortable" style="text-align:center" width="100%"
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| − | ! colspan="11" | Shell Details
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| − | |-
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| − | ! rowspan="2" data-sort-type="text" | Ammunition
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| − | ! rowspan="2" class="unsortable" | Type of <br /> warhead
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| − | ! rowspan="2" |Velocity <br /> in m/s
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| − | ! rowspan="2" |Projectile<br />Mass in kg
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| − | ! rowspan="2" | ''Fuse delay''
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| − | ''in m:''
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| − | ! rowspan="2" | ''Fuse sensitivity''
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| − | ''in mm:''
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| − | ! rowspan="2" | ''Explosive Mass in g<br /> (TNT equivalent):''
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| − | ! rowspan="2" | ''Normalization At 30° <br> from horizontal:''
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| − | ! colspan="3" | ''Ricochet:''
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| − | |-
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| − | ! 0%
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| − | ! 50%
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| − | ! 100%
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| − | |-
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| − | | M20 || API-T || 887 || 0.0403 || N/A || N/A || N/A || _._° || __° || __° || __°
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| − | |-
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| − | | M2 || AP || 856 || 0.046 || N/A || N/A || N/A || _._° || __° || __° || __°
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| − | |-
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| − | | M1 || I || 944 || 0.041 || 0.02 || 0.3 || 1.2 || _._° || __° || __° || __°
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| − | |-
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| − | |}
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| − | | |
| − | {|class="wikitable"
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| − | ! colspan = "6" | Ammunition Belts
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| − | |-
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| − | ! '''Belts''' || '''Shell Composition'''
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| − | |-
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| − | |align="left"|''Universal'' ||align="left"| API-T / AP / I / AP
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| − | |-
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| − | |align="left"|''.50 AP'' ||align="left"| API-T / AP / AP / AP
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| − | |-
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| − | |align="left"|''.50 APIT'' ||align="left"| API-T / API-T / API-T / I
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| − | |-
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| − | |}
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| − | The recommend belt to use is the APIT belt. It suffers from a slight penetration penalty compare to AP but gain the ability to set fires.
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| − | | |
| − | === Torpedo armament ===
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| − | <!--Many ships are armed with torpedo launchers, and for some vessels such as boats, torpedoes are an extremely important means of defeating an opponent. Evaluate the position of the torpedo launchers, discuss the ammunition available, firing specifics such as dead zones, features of the torpedoes themselves, etc.
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| − | | |
| − | If there is no torpedo armament, remove this section.-->
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| | | | |
| − | {{main|Mk.8-3 C/D (533 mm)}}
| + | === Available shells === |
| | + | ''Describe the shells that are available for the cannon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).'' |
| | | | |
| − | {| class="wikitable" style="text-align:center"
| + | === Comparison with analogues === |
| − | ! colspan = "9" | [[Mk.8-3 C/D (533 mm)|533 mm Mk.8-3 C/D torpedo]]
| + | ''Give a comparative description of cannons/machine guns, that have firepower equal to these type of weapons.'' |
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| − | ! # on ship !! Mass (kg) !! Maximum speed <br> in water (km/h) !! Travel distance (km) !! Depth stroke (m) !! Arming<br>distance (m) !! Explosive type !! Explosive mass (kg of TNT equivalent)
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| − | |-
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| − | | 4 || 1379 || 54 || 3.65 || 1.0 || 50 || Torpex || 435
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| − | |-
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| − | |}
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| | == Usage in battles == | | == 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 get 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).''-->
| + | ''Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against the main opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.'' |
| − | This boat is difficult to play. The optimal position to maximize your survivability is to have your bow pointing directly at your enemy however that also means you have no guns to fire at them. The optimal position for your guns is to have your rear point at the enemy but it exposes 3 of the 4 sections of the boat(particularly when driving forward at a high speed).
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| − | It is recommend you engage enemies by driving directly at them, releasing your torpedoes, then do a 180 and either use your machine guns to fight or smokes to run away.
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| − | | |
| − | Other players that prefer to play less aggressively just play the boat constantly in reverse so they can always have guns to fire 'forwards'. Another variant of this playstyle is camping behind an island with all four guns pointed at a high traffic area.
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| − | | |
| − | Some players attempt to play the boat as an AA gun but it lacks the vertical elevation to engage planes directly above it and the survivability to take on strafing fighters.
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| | === Pros and cons === | | === Pros and cons === |
| − | <!--''Summarize and briefly evaluate the vehicle in terms of its characteristics and combat effectiveness. Mark its pros and cons in the bulleted list. Try not to use more than 6 points for each of the characteristics. Avoid using categorical definitions such as "bad", "good" and the like - they have a substitution in the form of softer "inadequate", "effective".''-->
| + | ''Summarize and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.'' |
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| | '''Pros:''' | | '''Pros:''' |
| − | | + | * |
| − | * .50 calibre machine guns can effectively deal with just about any opponent it faces. | |
| − | * The 21-inch torpedoes can instantly obliterate an enemy ship, given they hit their mark.
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| − | * Decent top speed and acceleration
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| | '''Cons:''' | | '''Cons:''' |
| − | | + | * |
| − | * .50 cal turrets cannot face forward | |
| − | * The arrangement of the torpedoes requires firing from an angle against an enemy.
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| − | * Wooden ship with no armor
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| | == History == | | == History == |
| − | <!--Describe the history of the creation and combat usage of the ship in more detail than in the introduction. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(Vehicle-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.-->
| + | ''Examine the history of the creation and combat usage of this weapon. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: <nowiki>https://wiki.warthunder.com/(weapon-name)/History</nowiki>) and add a link to it here using the <code>main</code> template. Be sure to reference text and sources by using <code><nowiki><ref></nowiki></code>, as well as adding them at the end of the article.'' |
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| − | The 77 ft PT-20 was a follow-on to the first serial production PT boats in the United States, the Elco 70 ft PT-10 series. The PT-20 series was longer and heavier than their predecessors which caused a reduction in speed, although they were given additional torpedo tubes in an effort to increase the firepower. The change to 21 inch (53.3 cm) torpedo tubes up from 18 inch (45.7 cm) was a large addition to weight, and the earlier 70 ft PT boats could not carry the desired amount of torpedo tubes. In late 1941 and early 1942 a total of around 50 of these 77 ft Elco PT boats were produced and these would form the basis for the other widely produced versions such as the Elco 80 ft PT-103.
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| | == Media == | | == Media == |
| − | <!--Excellent additions to the article would be video guides, screenshots from the game, and photos.-->
| + | ''An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.'' |
| − | {{Youtube-gallery|LPFzWLprS_A|'''The Shooting Range #8''' - ''Pages of History'' section at 03:12 discusses Bulkeley's Devil Boats.}}
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| | == See also == | | == See also == |
| − | <!--Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:''
| + | ''Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:'' |
| − | | + | * ''reference to the article about the variant of the cannon/machine gun;'' |
| − | * ''reference to the series of the ship;'' | + | * ''references to approximate analogues by other nations and research trees.'' |
| − | * ''links to approximate analogues of other nations and research trees.--> | |
| − | * {{Specs-Link|us_elco_80ft_pt_boat}}: Elco's successor to the 77 ft PT-20 series, and one of the most widely produced versions of the PT boats in World War II
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| | == External links == | | == External links == |
| | ''Paste links to sources and external resources, such as:'' | | ''Paste links to sources and external resources, such as:'' |
| | + | * [http://www.navweaps.com/Weapons/WNFR_2cm-90_Giat.php GIAT M621 on NavWeaps.com] |
| | + | * ''other literature.'' |
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| − | * ''topic on the official game forum;''
| + | {{France aircraft cannons}} |
| − | * ''encyclopedia page on ship;''
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| − | * ''other literature.''
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| − | {{USA boats}}
| + | [[Category:Aircraft cannons]] |
Description
Write an introduction to the article in 2-3 small paragraphs. Briefly tell us about the history of the development and combat using the weaponry and also about its features. Compile a list of air, ground, or naval vehicles that feature this weapon system in the game.
Vehicles equipped with this weapon
General info
Tell us about the tactical and technical characteristics of the cannon or machine gun.
Available shells
Describe the shells that are available for the cannon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).
Comparison with analogues
Give a comparative description of cannons/machine guns, that have firepower equal to these type of weapons.
Usage in battles
Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against the main opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.
Pros and cons
Summarize and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.
Pros:
Cons:
History
Examine the history of the creation and combat usage of this weapon. If the historical reference turns out to be too big, take it to a separate article, taking a link to an article about the vehicle and adding a block "/ History" (example: https://wiki.warthunder.com/(weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref>, as well as adding them at the end of the article.
Media
An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.
See also
Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:
- reference to the article about the variant of the cannon/machine gun;
- references to approximate analogues by other nations and research trees.
External links
Paste links to sources and external resources, such as:
