Ankit Panda for The Diplomat (paysite) April 01, 2018 has made some useful points here regarding the second successful flight test of Pakistan's Babur-3 nuclear-capable submarine-launched cruise missile (SLCM) particularly:
"...The ability of the Babur-3 SLCM to launch from torpedo tubes might allow for demating the delivery system and the warheads dissembled onboard a submarine - an option that is more difficult and usually impossible with vertically loaded cruise missile launchers. Pakistan has not confirmed what sorts of use controls it will use on board its submarines to prevent unauthorized or accidental launches..."
See the full Diplomat (paysite) ARTICLE HERE
PETE COMMENT
Some dangerous ambiguities and situations about the Babur-3 exist for (Indian and of course Pakistani) decision makers in any Pakistani-Indian naval and/or strategic conflict. This includes:
1. the Babur-3 can be launched from a mere SSK (and not a presumed to be nuclear missile firing
nuclear propelled submarine).
2. a just fired land attack Babur-3 warhead may be innocuously conventional rather than
Armaggedon nuclear.
3. destruction of a Pakistani SSK might seem to India to be just part of conventional war, but if that
SSK carried nuclear warheads for Babur-3s then the destruction of that SSK may be nuclear war
starting for Pakistan, and
4. if the use-controls on nuclear warheads for Babur-3s are weak the Captain of the SSK that is about
to be destroyed may be inclined to use/fire his nuclear tipped Baburs before he "loses" them.
Submarine Matters has reported on the Hatf-7 (or VII) /Babur cruise missile frequently over the years.