Your simple math ignores the politics. According to the Arms Control Association in April 2020:We have 14 SLBM's and 4 SSGN's. You were in the Navy. This is public knowledge, even for sailors. You're right that the number or type of MIRVS on each missile is classified. But 14 SLBMs times 24 D5's (or C4's) times the max published payload equals 3,360. I split the difference on MIRV capability between W76 and W88. You forget that I know a little bit about those Trident I or II models and MIRVs. Evidently Wikipedia knows a little more than you.
I won't go into details, but the W76 and W88 are dial a boomers, from quite a bit less than Hiroshima to quite a bit more.
- The number of US operational warheads on all platforms allowed by the START treaty is 1,550. The estimate of actual warheads is 1,385. Bombers and ICBMs account for about 450 of those, leaving 935 for the subs, but the ACA estimates only 901 are actually deployed.
- Likely about half our sub capability is in the Pacific. We have a treaty with the UK to keep a number of subs/missiles/warhead in the Atlantic so we keep about half of our subs on that side.
- START also limits the US to 240 missiles deployed on submarines. The ACA estimates the actual number deployed is 203. Likely roughly half of those would be in the Pacific.
- FWIW, there are only seven Ohio Class assigned to the Pacific, with likely only five at sea at any given time. Per the START treaty, they are limited to 20 operational silos each, so four have been disabled on each sub.