US Navy Small Craft Training Center
US Navy Small Craft Training Centers (SCTC) were United States Navy training bases used to train sailors in the operation of the many small wooden crafts used in World War II. These crafts were given the nickname Splinter Fleet. There was a shortage of steel and steel shipyards during World War II, so there was a need for a vast wooden fleet of crafts.
Source: Wikipedia — US Navy Small Craft Training Center (CC BY-SA 4.0)