Shotline Diving’s Glossary Terms.AllABCDEFGHIJKLMNOPQRSTUVWXYZGGarden IslandGarden Island:Location: A small island located at the eastern end of Lake Ontario, near Kingston,... Learn More → Gas ScrewGas Screw: A vessel powered by an internal combustion engine (often gasoline-fueled) that drives a... Learn More → Goderich Signal Learn More → Great Lakes Shipshttps://greatlakeships.org/ Description: The Great Lakes Ships Database is an extensive repository documenting the vessels that have navigated... Learn More → Great Lakes Shipwreck Historical Societywww.shipwreckmuseum.com The Great Lakes Shipwreck Historical Society (GLSHS) is a non-profit organization dedicated to researching, preserving,... Learn More → Great Lakes Shipwreck MuseumGreat Lakes Shipwreck Museum Official Website The Great Lakes Shipwreck Museum is a maritime museum located... Learn More → Great Lakes tugboatsGreat Lakes TugboatsDefinition: Tugboats on the Great Lakes are specialized, powerful vessels designed for towing, pushing,... Learn More → Great Lakes Underwater Explorers ClubGreat Lakes Underwater Explorers (GLUE) – Kingston, ON (Now Defunct)The Great Lakes Underwater Explorers (GLUE)... Learn More → Great Storm of 1913The Great Storm of 1913 . Also Known As: “The White Hurricane” Date and Duration •... Learn More → Gross TonnageGross Tonnage (GT) Gross Tonnage (GT) is a measurement of a ship’s overall internal volume. It... Learn More → GTAGreater Toronto Area Learn More → GunwaleGunwale: The upper edge or side of a ship’s hull. On shipwrecks, the gunwale can... Learn More →