I did miss that, but it contradicts the Summary of Casualties which stated the Excelsior just needed a Starbase?
@OneirosTheWriter
I assume he wrote "Excelsior and Kumari both need Shipyards berths" when he meant to write "Sarek and Kumari both need Shipyards berths" because everything else fits.
Anyway, my other point that the delays make assigning the new Excelsiors to the Exploration Corps easier because we'd have more time to build up crews stands for delays to the SF berth as well, so this isn't a pure negative. An 75% for an Exploration Corps Excelsior vs a 95% chance a year later or something like that.
A six month delay (assuming the Sarek bumps the Explorer) means delaying 2 turns of Explorer Captain's Log for that ship. You know that will almost certainly be worth 10pp, or something just as valuable. And right now we're still on track to have enough Explorer crew for the SF ship on schedule. Come on, are you really sure that 10pp investment won't pay off?