• To your left is the marina where several senior cabinet officials keep luxury yachts for weekend cruises on the Potomac. Some of these ships are up to 100 feet in length; the Presidential yacht is over 200 feet in length, and can remain submerged for up to 3 weeks.

    Garrison Keillor: To your left is the marina where several senior cabinet officials keep luxury 
yachts for weekend cruises on the Potomac. Some of these ships are up to 100 
feet in length; the Presidential yacht is over 200 feet in length, and can 
remain submerged for up to 3 weeks.