This is all subject to change but range will most likely be 3km (map VD), just to limit it from being able to hit anything from anywhere and will also stop any possible issues of effects from the shells not being triggered from being fired outside of the VD etc.
Aiming will be somewhat similar to the Mortar system although somewhat more basic, with most likely a basic ranging system on the HUD and you having to aim in the direction of a target though attack markers, which will get your shots in around the right area, but you will need to have them walked in by a spotter to have any real accuracy since you will not be able to see much beyond just explosions in the distance at the most, assuming no terrain is in the way of your view of the target.
And finally, the main way I'm aiming to balance this feature from being super OP and constantly used to hammer targets into submission, is mainly to really limit the amount of ammo the main gun has, which was also the main limitation the naval bombardment had during the war with as I wrote here in the Naval Gunfire Support Chapter:
Amazon Class Remembrance - Project Reality Forums
100 rounds was the norm, because of the impending shortage of 4.5" Mk. 8 ammunition, though Avenger fired a staggering 293 rounds on the night of 1 June and returned to the CBG at dawn to replenish fuel and ammunition. The latter was done either alongside an ammunition ship ('FORT' class RFA) with jackstays rigged both forward and aft; or by helicopter under-slung loads. The replenishment could take hours and was exhausting work for the whole ship's company, who had to lumber the heavy ammunition, shell by shell, though the ship to the magazine entrance. Frequently the replenishment would be broken off as the force went to action stations in anticipation of an air strike. The weather was variable. Storms generated awesome seas, whilst on other occasions there was flat calm and thick fog. Either way, the operations continued unabated.
Although ingame, like the range of the weapon, the amount of ammo the Frigate will carry in its magazine will be far less than in r/l, will be something like 20 HE rounds at a guess, we need to do some fine testing to really determine what is the best amount to allow players to have enough rounds to both be able to be walked onto a target by a spotter, as well as leave enough to be able to cause enough of an impact, and then also enough that the reloading period gives enough of a break for the ground troops to recover before the bombardment can possibly start up again, also giving plenty of time for the Argentine bombers to try and keep the Frigate occupied with fighting for its life rather than supporting the troops on the ground, and this is not forgetting to mention the Argentinians will get a bunch more bombers to offset the power of the Frigate so they can both mount effective attacks on the Frigate, and also bomb ground targets into submission in much the way the Frigates main gun will be able to.
