Ballast Island may refer to:
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. A fluorescent lamp converts electrical energy into useful light much more efficiently than an incandescent lamp. The typical luminous efficacy of fluorescent lighting systems is 50–100 lumens per watt, several times the efficacy of incandescent bulbs with comparable light output. For comparison, the luminous efficacy of an incandescent bulb may only be 16 lumens per watt.
Ballast is any dense material used as a weight to provide stability to a vehicle or structure.
A monohull is a type of boat having only one hull, unlike multihulled boats which can have two or more individual hulls connected to one another.
An atmospheric diving suit (ADS) is a small one-person articulated submersible which resembles a suit of armour, with elaborate pressure joints to allow articulation while maintaining an internal pressure of one atmosphere. An ADS can enable diving at depths of up to 700 metres (2,300 ft) for many hours by eliminating the majority of significant physiological dangers associated with deep diving. The occupant of an ADS does not need to decompress, and there is no need for special breathing gas mixtures, so there is little danger of decompression sickness or nitrogen narcosis when the ADS is functioning properly. An ADS can permit less skilled swimmers to complete deep dives, albeit at the expense of dexterity.
Ballast Island is a small, 15-acre (0.049 km²) private island on Lake Erie in the U.S. state of Ohio, about one-quarter mile (0.4 km) northeast of the northeast tip of South Bass Island. It is known primarily as a navigation point for boats going to or from Put-in-Bay from the east. There are shoals between Ballast and South Bass, but there is a passage between known locally as "the wagon tracks".
Mandy-Rae Cruickshank is a world champion free-diver and record-holder from Vancouver, British Columbia.
Yasemin Dalkılıç is a Turkish female free diver. She holds numerous records in different categories of free diving. Though still in the middle of her career, she is already considered to be one of the all-time greats in the sport.
Ballast is used in ships to provide moment to resist the lateral forces on the hull. Insufficiently ballasted boats tend to tip or heel excessively in high winds. Too much heel may result in the vessel capsizing. If a sailing vessel needs to voyage without cargo, then ballast of little or no value will be loaded to keep the vessel upright. Some or all of this ballast will then be discarded when cargo is loaded.
Ballast Key is an island in the Florida Keys in Monroe County, Florida, United States. It is the southernmost point of land in the contiguous United States. It was the last privately owned land within the boundaries of the Key West National Wildlife Refuge.
A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct trim or list, to provide a more even load distribution along the hull to reduce structural hogging or sagging stresses, or to increase draft, as in a semi-submersible vessel or platform, or a SWATH, to improve seakeeping. Using water in a tank provides easier weight adjustment than the stone or iron ballast used in older vessels, and makes it easy for the crew to reduce a vessel's draft when it enters shallower water, by temporarily pumping out ballast. Airships use ballast tanks mainly to control buoyancy and correct trim.
Sub Marine Explorer is a submersible built between 1863 and 1866 by Julius H. Kroehl and Ariel Patterson in Brooklyn, New York for the Pacific Pearl Company. It was hand powered and had an interconnected system of a high-pressure air chamber or compartment, a pressurized working chamber for the crew, and water ballast tanks. Problems with decompression sickness and overfishing of the pearl beds led to the abandonment of Sub Marine Explorer in Panama in 1869 despite publicized plans to shift the craft to the pearl beds of Baja California.
Ballast Point may refer to:
Ballast Point Lighthouse was a lighthouse in California, situated on Ballast Point, a tiny peninsula extending into San Diego Bay from Point Loma, San Diego, California. The lighthouse was torn down in 1960; the site is now on the grounds of Naval Base Point Loma. Ballast Point Lighthouse was the last lighthouse displaying a fixed light on the Pacific Coast. An automated light is left in its place and operates on a piling in the water off of the original site.
A heavy-lift ship is a vessel designed to move very large loads that cannot be handled by normal ships. They are of two types:
John Day is the first recorded death in an accident with a submarine. Day was an English carpenter and wheelwright. With the financial support of Christopher Blake, an English gambler, Day built a wooden "diving chamber" without an engine. He attached his invention to the deck of a 50-ton sloop named the Maria, which Blake had purchased for £340. The sloop's hold contained 10 tons of ballast, and two 10-ton weights were attached beneath the keel which could be released from inside the diving chamber. An additional 20 tons of ballast would be loaded on the Maria after Day had been locked inside the diving chamber.
Ballast is dense material used as a weight to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within a boat, ship, submarine, or other floating structure that holds water is called a ballast tank. Water should move in and out from the ballast tank to balance the ship. In a vessel that travels on the water, the ballast will remain below the water level, to counteract the effects of weight above the water level. The ballast may be redistributed in the vessel or disposed of altogether to change its effects on the movement of the vessel.
Black Watch was a large full-rigged ship built by Windsor shipbuilder Bennett Smith in Windsor, Nova Scotia. It was the last ship built by Smith in Windsor.
Ballast Head is a locality in the Australian state of South Australia located on the north coast of Kangaroo Island overlooking Nepean Bay about 118 kilometres south of the state capital of Adelaide and about 19 kilometres southeast of the municipal seat of Kingscote.
The Sanibel 18 is an American trailerable sailboat, that was designed by Charles Ludwig, first built in 1982 and named for the Floridian town and island.
The Fantasia 27 is a French sailboat, that was designed by Philippe H. Harlé and first built in 1981.