Make this a photo and make it look big underwater. No people, just it. No over submarines. And have a hatch for other subs to be closed. # German U-Boat Mother Ship — U-636 **Vessel Type:** Type XL — Unterseeboot-Versorgungsschiff **Individual Boat:** U-636 **Nation:** Germany **Service:** Kriegsmarine **Classification:** Großes U-Boot-Mutterschiff / Unterwasser-Versorgungs-U-Boot **Primary Role:** Underwater mother ship, submarine refueling, replenishment, maintenance, and temporary shelter **Design Basis:** Enlarged Type XB long-range cargo submarine **Design Period:** 1943–1945 **Intended Mission:** Allow smaller German U-boats to replenish fuel, provisions, batteries, lubricants, and selected supplies at sea without returning to a German-occupied French Atlantic base **Operational Environment:** North Atlantic, Norwegian Sea, Arctic waters, and remote ocean areas **Normal Operating State:** Fully submerged ### Dimensions **Length Overall:** 128.5 m **Beam:** 12.4 m **Height from Keel to Top of Conning Tower:** 16.8 m **Draft, Surfaced:** 7.4 m **Draft, Submerged:** Approximately 8.0 m **Pressure-Hull Length:** 112 m **Pressure-Hull Diameter:** Approximately 9.8 m **Displacement, Surfaced:** 6,950 tonnes **Displacement, Submerged:** 9,250 tonnes **Maximum Internal Volume:** Approximately 18,000 m³ **Cargo and Supply Capacity:** Approximately 1,800 tonnes ### Construction **Hull Arrangement:** Double-hull ocean-going submarine **Pressure Hull:** Heavy welded steel Ver más