Many Bolivian officers train in ocean sailing on Argentinian seagoing naval ships. The Marine Department operates and maintains 58 mooring buoys for seagoing vessels. Djongs are used mainly as seagoing passenger and cargo vessels. Bacterial adhesion to boat hulls serves as the foundation for biofouling of seagoing vessels. Boston's harbor provided secure anchorage for seagoing commercial vessels. Another way birders view pelagic species is from seagoing vessels. Desalination is used on many seagoing ships and submarines. No standards apply to seagoing ships or airplanes. LNG is shipped around the world in specially constructed seagoing vessels. A gyrocompass, employed for navigation of seagoing vessels, finds the geometric north. "Margery" in March 1816, one of the earliest seagoing voyages by steam ship. These archipelagos provide protected deepwater harbors and also provide habitat for seagoing birds. The Ouse was originally a tidal river, accessible to seagoing ships of the time. The design was eventually used on seagoing yachts from the 1960s. However, the war ended before he was assigned to a seagoing squadron.