Fixed Forward-Facing Weapon: Difference between revisions

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{{trope}}
[[File:vorloncruiser_7740vorloncruiser 7740.jpg|link=Babylon 5|frame| You're about to be [[Touched by Vorlons]] [[Wave Motion Gun|in a rather painful way]]. Have a nice day.]]
 
 
Sometimes a full broadside cannon barrage isn't enough to bring down those pesky enemy ships. Or the enemy may be running away as fast as they can, and you don't have time to turn and give them the full fury of your weapons array. That's why you should remember to design your ships with a [[Wave Motion Gun|really big weapon]] pointed straight forward, to make running away very unattractive as the cannon rips into them from behind.
 
The core of the trope is that the weapon cannot be independently aimed -- itaimed—it can only fire in a fixed direction relative to the ship (typically straight ahead), so you have to maneuver the entire ship in order to aim it. This is typically because the weapon is so large that it takes up a significant portion of the ship's mass and/or volume, so mounting it in a turret is impractical or impossible. It can be nose-mounted, dorsally mounted (on the top surface of the ship), ventrally mounted (on the bottom), or a "spinal weapon" (where it runs along -- oralong—or in extreme cases ''is'' -- the—the spine of the ship).
 
Commonly referred to as the "main gun" or some other such name to indicate how much more powerful it is compared to the other weapons.
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* ''[[BattleTech]]'' mostly avoids this; weapons are standardized no matter what platform mounts them and even big guns are usually just part of a unit's entire array. There are, however, a couple of cases that play the trope more or less straight:
** For ground units, it's the heavy Gauss rifle, whose massive recoil prevents it from being arm- or turret-mounted and makes firing it while moving risky for BattleMechs because doing so forces a piloting skill roll to avoid falling.
** Meanwhile, suitably large ''space'' units -- asunits—as in, 750,000 tons and up -- mayup—may potentially be equipped with as-yet-experimental mass drivers, whose firing arc is literally just the straight line of hexes in the direction they're pointed into (which for WarShips, which can only carry one at most, means dead ahead). They're also quite massive themselves and rather inaccurate even if they do get a target lined up, so many players don't consider the damage they can potentially inflict really worth it (it's not ''that'' out of line with a simple volley of more 'regular' naval weapons, anyway).
* In the starship miniatures game Full Thrust, this is a standard part of Kra'Vak (the most antagonistic alien race) design philosophy; their ships carry mass driver cannons called K-guns (for Kinetic Gun) as their main weapons, and only the smallest two classes can have more than a sixty degree firing arc. A typical Kra'Vak ship carries the two biggest K-guns the ship can structually carry on outrigger-type pods facing forward (sometimes with barrels as long or longer than the main hull of the ship) as her main battery, plus secondary weapons. A few Kra'Vak ships carry a third main gun as a spinal mount in the main hull, while some of their biggest ships carry four outriggers.
 
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* ''[[Star Trek Elite Force|Star Trek Voyager: Elite Force]]'' had one level that took place on a vessel called [[Names to Run Away From Really Fast|"Dreadnought"]] which was described in game as "a giant cannon on autopilot." The monster has a barrel 700 meters long that you repurpose to fire on a Harvester ship approaching [[Star Trek: Voyager|Voyager]].
* ''[[Master of Orion]]'' ships can be designed with narrow firing arcs if the player wants to mount more guns since guns with a larger arc take up more space. A spinal mount is an option in ''MoO 3''.
* Based on the animations, ship special weapons (read: [[Wave Motion Gun|Wave Motion Guns]]s) in ''[[Infinite Space]]'' are fixed like this, as are most large weapons.
* ''[[Naval Ops]]'' series: [[Wave Motion Gun|Wave Motion Guns]]s, railguns, and a variety of other energy weapons can only shoot straight forward or backward in the.
* The Galactic Armory mod for ''[[Star Ruler]]'' adds a Spinal Mount Hull option, which allows you to link a weapons system to it to greatly improve that weapon's capabilities.
* ''[[Videogame/World Of Tanks|World Of Tanks]]'': Most tank destroyers and artillery have guns that are almost entirely fixed to the hull with only a very slight angle of adjustment before you have to move the entire tank hull. Several exceptions exist, such as the American "turreted TD" line, and some artillery like the GW Panther. The American M3 Lee medium tank is one of the only tank tanks to have a fixed gun.
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== [[Real Life]] ==
* The American [[World War II]] era [[wikipedia:North American B-25 Mitchell|B-25 Mitchell]] bomber had a variant (the B-25G, and improved in the H model) designed for anti-ship strafing, with a 75  mm M-4 cannon in the nose.
** Several medium and light bombers in the US inventory had solid noses, as opposed to the normal glass nose traditional to bombers of the time, with multiple machine guns in immobile mounts for the purpose of having a ground attack role.
** [[wikipedia:Old 666|Old 666]], a B-17 from the same era was also fitted with a forward facing machine gun that the pilot could use to fend off head-on attacks from enemy fighter planes.
* One version of the DeHavilland Mosquito carried a 57mm cannon for anti-submarine work, attacking them on the surface and holing their hulls so they could not dive. Its effect on enemy aircraft, when circumstances permitted its use (i.e. caught unawares, not dodging and weaving) was described as 'spectacular'.
** Likewise, a never-used variant of the German Me-262 jet fighter replaced the 4 30mm cannon of the standard model with a single 57  mm reason. This was because it took 12+ well placed hits from the 30mm to bring down a B-17 or B-24, and the 262 was too fast to maintain a firing position. The 57mm required one hit almost anywhere on the plane.
* Similarly the German Ju-88P was a tank killer variant with a 75mm PaK gun.
* The [[wikipedia:Fairchild Republic A-10 Thunderbolt II|A-10 Thunderbolt II]] is [http://upload.wikimedia.org/wikipedia/commons/d/da/A-10_Cross_Section.jpg built around] [[Gatling Good|a massive 30MM Gatling gun]].
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