You could blow off the conference and spend the whole week sightseeing.
Things to do:
1.) Maritime Museum: http://www.nps.gov/safr/local/mus.html
2.) sub : http://www.maritime.org/pamphome.htm
3.) Maritime Park: http://www.maritime.org/index.htm
4.) Hornet Muesum (across the bay in Alameda): http://www.uss-hornet.org/
5.) Liberty ship: http://www.ssjeremiahobrien.org/
6.) USS Macon (~1 hr. south in Sunnyvale): http://www.moffettfieldmuseum.org/
The South Bay Model Shipwrights will meet on June 17th, 7:00 PM, at the Stanford Linear Accelerator (~1 hr. south of SF)
Enjoy your trip. Let me know when you'll be in the area.