| See under Intracoastal Waterway. |
[in-truh-koh-stuh
l, in-] 
| a mostly inland water route, partly natural and partly artificial, extending 1550 mi. (2500 km) along the Atlantic coast from Boston to Florida Bay (Atlantic Intracoastal Waterway) and 1116 mi. (1800 km) along the Gulf coast from Carrabelle, Fla., to Brownsville, Tex. (Gulf Intracoastal Waterway): constructed to protect small craft from the hazards of the open sea. |
| Atlantic Intracoastal Waterway A system of inland waterways including rivers, bays, and canals along the Atlantic coast of the United States. It extends from Cape Cod to southern Florida and forms part of the Intracoastal Waterway that affords protected passage from Massachusetts to southern Texas. |