Scott Kenny
ACCESS: USAP
- Joined
- 15 May 2023
- Messages
- 10,624
- Reaction score
- 12,433
IIRC, Rota was mostly for Med deployments. It'd be hard to sneak into the Baltic.Would it help that they still had the SSBN base at Rota in Spain? Perhaps they could use a fijord in Greenland or Iceland instead of Holy Loch.
The GW and Ethan Allen boats would probably stay as Polaris, and stay in Med runs out of Rota or La Maddelena until replaced by Ohios in the 1980s.I don't know if it's possible to go straight from Polaris A3 to Trident C4. Maybe if Congress was willing to throw enough money at it and/or an earlier start is made on the STRAT-X and SLMS programmes. So there are two possibilities.
- Trident C4 can be developed instead of Poseidon C3. I which case the Laffayettes have their Polaris missiles replaced by Trident 1 ITTL when they were rearmed with Poseidon IOTL. AIUI the George Washington & Ethan Allen classes weren't rearmed with Poseidon because the existing missile tubes were too small which made the cost of rearming them prohibitively expensive. However, ITTL the different threat and extra performance that Trident 1 had over Poseidon might make the cost of the modifications acceptable. This saves money in the long term because 12 Laffayette class were rearmed with Trident 1 circa 1980 IOTL so the money can be spent on something else.
- Trident C4 can't be developed instead of Poseidon C3. Therefore, the Laffayettes were rearmed with Poseidon as IOTL and the 10 older SSBNs were rearmed with Poseidon too despite the extra cost. More than 12 first-generation SSBNs would have been rearmed with Trident 1 circa 1980 ITTL.
- In either of the above scenarios there are no SALT treaties so no SSSBNs converted to SSN to remain within Treaty limits ITTL - because there were no treaties to be limited to.
Remember, you're talking about replacing a 33ft tall 56" diameter missile with a 34ft tall 74" diameter missile in either case, by ripping the old missile compartment out and installing a whole new one. That'd take a couple years in drydock for each boat.
Agree with Scenario 1, disagree with Scenario 2 because there's literally zero chance of spending that long refitting the subs to hold newer missiles.Which brings me to the Ohio class and the D-5 Trident II missile. The Ohio class is likely to be built in greater numbers over the same period of time.
IIRC the original plan was to lay down 10 Ohio class over 4 years (1-3-3-3) starting FY1974 and complete them 1978-81 to replace the first 15 first-generation SSBNs which according to the book I read it in had been worked particularly hard. In the event the first 10 were ordered over 10 years (1-2-1-1-2-0-1-1-0-1) starting FY1971 and they were completed 1981-89. ITTL they may be built at the rate originally planned with up to 30 completed by 1989 for a missile-for-missile replacement of the 45 first-generation SSBNs. That is 45 boats with 16 missiles each (total 720 missiles) replaced by 30 boats with 24 missiles each (total 720 missiles).
It it's Scenario 1 then 45 first-generation boats rearmed with Trident 1 in the early 1970s are replaced by 30 Ohios armed with Trident 2 - because getting Trident 1 into service has a knock-on effect on Trident 2.
If its Scenario 2 then 45 first-generation boats rearmed with Poseidon in the early 1970s (and rearmed with Trident 1 c.1980) are still replaced by 30 Ohios. All other things being equal the first 24 were completed with Trident 1 and last 6 were armed with Trident 2
Very likely the reason. The UK was integrated into SIOP, after all.Note: As an aside, I've suspected (for a long time) that the USN didn't build the 4 SSBNs in the FY1965 Programme because the RN was building 4 SSBNs.
Something akin to a Sierra class, or the Trafalgar class. Very quiet, and with very good sonar to hunt SSBNs.Sounds quite feasible, although my knowledge of SSBN's is very limited. What would be the British answer in this case, any suggestions?
They'd also probably try to park a few SSNs at Rota, La Mad, Norfolk, and anywhere else the SSBNs were based. Follow them to their patrol areas, get sonar signatures of them, etc. Same thing they did to the Russians historically!
Probably would not convert any SSBNs, but there's a good chance that there would be more SSG/SSGN types built as LPSS/N types. Maybe a few Permits built as LPSSNs using the same plans as the Permit SSGN proposal.Also, would the Americans consider converting some of those boats to transports and use them for transatlantic covert deliveries - to France or Ireland? Or building specialized submarine transports?