Submarine chasers in the Pedro Miguel lock, Panama Canal. Photograph of subchaser at the Pedro Miguel lock. Collection of William B. May. Thanks to Penny Thompson, his daughter, for submitting the photo scan. Book traversal links for Panama Canal - May Collection 19 - Pedro Miguel ‹ Panama Canal - May Collection 18 - Emergency Locks Up Panama Canal - May Collection 20 - Balboa Docks ›