Rolls-Royce Type BH (40 mm)
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
Tell us about the tactical and technical characteristics of the cannon or machine gun.
Describe the shells that are available for the weapon 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 this weapon.
Usage in battles
Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable 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
Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.
- Option to fire AP-T or HEFI-T* shells, or a mix of both ammo types
- High rate of fire
- HE shell is very effective against most aircraft
- All shells have a tracer
- Overheats quickly
- Successive shots reduce accuracy
- Both AP-T and HEFI-T* have different muzzle velocity
Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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></ref>, as well as adding them at the end of the article with
Excellent additions to the article would be video guides, screenshots from the game, and photos.
Paste links to sources and external resources, such as:
- topic on the official game forum;
- other literature.
|Britain aircraft cannons|
|20 mm||Hispano Mk.I · Hispano Mk.II · Hispano Mk.V · Oerlikon KAD-B|
|30 mm||ADEN · ADEN Mk.4|
|40 mm||Rolls-Royce Type BH · Vickers S|
|47 mm||Vickers P|
|57 mm||Molins Class M|
|20 mm||Hispano 404 (France) · M61A1 (USA)|
|30 mm||M230E-1 (USA)|