
It struggles against battleships or otherwise heavily-armoured parts of the warships (turret faces, armoured magazines, etc.). It's able to deal with most of the targets delivering an abundance of damage. 356 mm ordinary SAP - the default shell, is most useful of the three, having the largest bursting charge while also maintaining good penetration capabilities and one of the best muzzle velocities in its class.

There are 4 types of shells available, SAP shared by all ships, distinct APC shells for IJN Hyuga, a distinct APC shells for Kongo-class and the HE shells available only for the Kongo-class. Protection analysis of the SAP (left) and HE (right) shell damage vs unarmoured (top) and armoured (bottom) parts of a ship showing SAP being far superior if it can fuze on at least 12 mm of armour and HE holding advantage if there's no armour to fuze from The Kongo-class features protection that's more all-rounded, lacking any particular weak spots like the base of the ammo elevator on Hyuga. IJN Fuso's armour is similar, the most notable difference being a better and more uniform protection of the ammo elevators. The IJN Hyuga has armour tailored for broadsides, with higher protection on the turret face and the sides of the ammo elevator. The 36 cm/45 Type 41 is the main armament found on a battleship and battlecruisers, coming in two distinct turret designs. These are better left for the secondary, or even anti-air guns.

Like all high-calibre guns, the Type 41 is best used against large, predictable targets, as the base 39-second reload time (decreased down to 30 seconds with crew skills and qualifications) makes it tricky to correct for maneuvering targets, such as destroyers or coastal vessels. Even the default SAP shells will penetrate everything but the heaviest armour on battleships and battlecruisers. It is a very capable naval weapon in War Thunder, often able to take down enemy destroyers or light cruisers with a single salvo (even if only by flooding). The 36 cm/45 Type 41 is a Japanese 356 mm naval cannon.
