Now, you might ask, if SanFran is SSN-711, and the Hono was SSN-718, why did they cut the bow off a newer boat to put on an older boat? The answer is money, obviously.
HONOLULU was nearing the time that we lovingly refer to as End of Core life, meaning that the reactor was running out of fuel and it was time to either refuel it (which costs a pretty penny) or decommission it (which costs slightly less).Enter the San Frantastic. Everyone knows about the accident in the Caroline Island Ridge. Now, why would you be driving as fast as humanly possible in an island chain? All things being equal, because they could. San Fran had undergone a refueling from 2000-2002 prior to getting forward deployed to Guambodia. This means that her hull would expire before the core would. If the doors will fall off before you run out of gas, might as well punch it.
So, here we are. One busted up submarine with a full gas tank. One good submarine with an empty gas tank. What do you do?