Control Force submarines and their tenders at Christobal, Panama Canal Zone, circa 1923. The tenders are (from left to right):
Savannah (AS-8),
Bushnell (AS-2),
Beaver (AS-5) and
Camden (AS-6).
Submarines are mostly R-boats, among them R-23 (SS-100) and R-25 (SS-102), both in the nest alongside Savannah's port quarter. The larger submarine alongside Savannah's bow may be S-1 (SS-105), with her large seaplane hangar.
