Sailors and shipyard workers are pictured during a submarine's dry-docking, a routine but essential procedure for inspecting and maintaining the hull, propellers, and underwater fittings of a fleet submarine. Vessels such as the Balao-class USS Charr (SS-328) required periodic dry-dock overhauls between war patrols to ensure watertight integrity and combat readiness. The wooden scaffolding visible at right allowed workers access to the full height of the hull for scraping, painting, and repair work. Project: 218697