Landing Ship Battleship.

[kerick]

Unless you were on quite water inland or close to shore hitting anything would be difficult. On open sea I think there would be shells all over the place.
But, in whiff world, anything is possible.

[NARSES2]

Well if you're going with Bishops you could temporarily remove the armoured box. Can't think it would be that difficult as it was an extemporised design anyway ?

[tigercat]

Good point. I imagine a petard would be specifically close range.

On a slight tangent inspired by the bishop. If I wanted to fit a corvette 4inch turret to a tank what size tank would I require . 

[pyro-manic]

A big one. Naval guns are big and heavy, even without a turret (the smaller ones on escorts were usually on open mountings with gunshields rather than in turrets). Compare to the German 88mm, but a bit bigger (4" is 102mm) and you're looking at Tiger-sized or larger. The Tortoise heavy assault tank was pushing 80 tonnes, and that had a 94mm gun. No turret though.

An un-armoured (or at least very lightly so) self-propelled gun would be a better prospect.

[Old Wombat]

I'd be using a Hetzer/Tortoise type vehicle for a naval 4" gun because the gun is bigger & heavier than even the 1st 105mm tank guns.

This is, iirc, because the 4" naval gun has a much larger propellant charge than similarly sized tank guns, as it is required to fire its shells much greater distances in normal operations than tank guns are. Thus, the chamber, loading mechanisms & barrel are much more heavily constructed than your average tank gun which is vastly less of a problem aboard a ship than it is in a tank.

Larger tank guns were not so much an issue of possibility as they were of practicability. 105mm & larger tank guns did not come into service until metallurgy had developed enough to produce a thin-walled (therefore light) barrel capable of withstanding the pressures of even the lighter propellant charge of tank guns.

A 4" naval gun toting tank is going to be a BIG mother......hugger!



Guy

PS: I seem to recall writing something quite similar somewhere else - cyclic/parallel ideas?

[NARSES2]

Good point. I imagine a petard would be specifically close range.

Yup.

I could see a large'ish calibre mortar being useful for close in action against relatively lightly armoured ships. Think of the damage it would cause to deck fittings and crew. Might not do to much structural damage ? Thus captured ship could be repaired/reused ? Not sure about this particular thought but others will know better 

[tigercat]

Didnt the germans mount a navl mortar on a tank

Either the Brummbar or the Sturmtiger

[jcf]

As long as by petard one means the petard mortar of the Churchill AVRE, as a real
petard would be of little use unless one was tied up alongside one's enemy.  

Heavy mortars in the vehicle well of an LCT, bomb ketch redux.  

As to the weights etc., of naval weapons, go here:
http://www.navweaps.com/Weapons/index_weapons.htm

The 4"/45 of the Flower class etc.
http://www.navweaps.com/Weapons/WNBR_4-45_mk9.htm

Brummbär had a Skoda short-barreled howitzer, Sturmtiger used a rocket launcher developed from a KM depth charge launcher.

[NARSES2]

As long as by petard one means the petard mortar of the Churchill AVRE, as a real
petard would be of little use unless one was tied up alongside one's enemy.  

Heavy mortars in the vehicle well of an LCT, bomb ketch redux.  

Absolutely to both  Mind you, you could say a limpet mine is a kind of modern day Petard ? 

[zenrat]

For capturing ships maybe some kind of huge punt gun could be useful for sweeping the decks free of enemy personnel?

Re the weight of naval gun mountings I was looking at fitting a 20mm Oerlikon on a swivel mount to an aircraft and found some nice 1/72 kits for the Flower Class Corvette.  I was put off by the heft of the mountings and have gone in another direction.

How about a Mk viii pom pom on a tank or on the back of a truck?

[Old Wombat]

Vietnam, on top of a Centurion hull!

It'd clear a LZ in quick order & scare the VC back to Hanoi!



Guy

[Rheged]

Vietnam, on top of a Centurion hull!

Guy

Yes, the Centurion Decimator.  An early response to the helicopter threat. Abandoned after difficulties were experienced with the ammunition feed during sustained firing.  Bovingdon probably have one in their  reserve  stock .