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Libby Island Light
Libby Island Light is a lighthouse on Libby Island, marking the mouth of Machias Bay, in Machiasport, Maine. The light station was established in 1817 and is an active aid to navigation; the present granite tower was built in 1823 and improved in 1848. Libby Island Light was listed on the National Register of Historic Places as Libby Island Light Station on June 18, 1976. Description and history Libby Island Light is located on South Libby Island, one of two islands (collectively known as the Libby Islands) marking the southernmost approach to Machias Bay on the northeastern coast of Maine. The light station's principal feature is the lighthouse, an unpainted conical granite tower in height, with its base in diameter and its upper parapet in diameter. The tower is located on the southern shore of the island, with a fog signal house to its west. A boat landing is located on the northern shore of the island, and a small helipad is near its center. The light station was aut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machias Bay
Machias Bay is a bay in Washington County, Maine that opens into the Gulf of Maine. The bay was the scene of the Battle of Machias — the first naval battle of the American Revolution, occasioned by the British need for lumber for Boston. Located at the mouth of the Machias River between the towns of Machiasport, Machias, East Machias East Machias is a town in Washington County, Maine, United States on the East Machias River. At the 2020 census, the town population was 1,326. It is the home of Washington Academy, a private school founded in 1792. Geography According to the ..., Whiting, and Cutler, it is separated from Little Machias Bay to the east by the Cutler Peninsula, from Little Kennebec Bay to the west by the Point of Maine, and from the Gulf of Maine to the south by Cross Island and the Libby Islands. The bay extends roughly 7 mi. (12 km) and is 4 mi. (6 km) at its widest. Notes External links Maine Coast Guides: Machias Ba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresnel Lens
A Fresnel lens ( ; ; or ) is a type of composite compact lens developed by the French physicist Augustin-Jean Fresnel (1788–1827) for use in lighthouses. It has been called "the invention that saved a million ships." The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. The simpler dioptric (purely refractive) form of the lens was first proposed by Count Buffon and independently reinvented by Fresnel. The ''catadioptric'' form of the lens, entirely invented by Fresnel, has outer elements that use total internal reflection as well as refraction; it can capture more oblique light from a light source and add it to the beam of a lighthouse, making the light visible from greater distances. Description The Fresnel lens redu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VRB-25
The VRB-25 is a lighthouse optical system designed and built by Vega Industries Ltd. in Porirua, New Zealand. It was originally designed in 1993-95 with the assistance of the United States Coast Guard to meet USCG requirements for a robust mechanism requiring minimum maintenance. It has become the Coast Guard's standard 12 volt rotating beacon. The company's literature says there are more than 400 installations worldwide. More than a quarter of the active lighthouses in Maine have one installed. Components A microprocessor controlled 12 volt DC motor drives an array of six or eight acrylic Fresnel lenses around a bulb at one of 248 speeds ranging from 0.5 to 15.9 revolutions per minute (RPM). In the simplest case, all six lenses are used, so that for Boon Island Light, which shows one flash every five seconds, the mechanism rotates at two RPM. Eight lenses are used only when required to achieve more complex characteristics. Maximum range is achieved by using the slowest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machiasport, Maine
Machiasport is a town in Washington County, Maine, United States. The population was 962 at the 2020 census. Machiasport is a historic seaport and tourist destination. History In 1633, the Plymouth Company established a trading post here to conduct business with the Native Americans. But this was part of Acadia, territory which New France considered its own. So in 1634, the trading post was sacked by French forces from Port Royal under the command of Charles de Saint-Étienne de la Tour. In 1770, the area was granted by the Massachusetts General Court to 80 petitioners, 54 from Scarborough. It was first part of Machias, incorporated in 1784, then set off and incorporated as Machiasport in 1826. In 1775, following the capture of the British ship HMS ''Margaretta'' by locals under leadership of Jeremiah O'Brien, the residents built a small breastworks here to guard the mouth of the Machias River and the area settlements. Later that year, the British sent four ships under the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouse
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maine
Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and northwest, respectively. The largest state by total area in New England, Maine is the 12th-smallest by area, the 9th-least populous, the 13th-least densely populated, and the most rural of the 50 U.S. states. It is also the northeasternmost among the contiguous United States, the northernmost state east of the Great Lakes, the only state whose name consists of a single syllable, and the only state to border exactly one other U.S. state. Approximately half the area of Maine lies on each side of the 45th parallel north in latitude. The most populous city in Maine is Portland, while its capital is Augusta. Maine has traditionally been known for its jagged, rocky Atlantic Ocean and bayshore coastlines; smoothly contoured mountains; heavily f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aid To Navigation
In international relations, aid (also known as international aid, overseas aid, foreign aid, economic aid or foreign assistance) is – from the perspective of governments – a voluntary transfer of resources from one country to another. Aid may serve one or more functions: it may be given as a signal of diplomatic approval, or to strengthen a military ally, to reward a government for behavior desired by the donor, to extend the donor's cultural influence, to provide infrastructure needed by the donor for resource extraction from the recipient country, or to gain other kinds of commercial access. Countries may provide aid for further diplomatic reasons. Humanitarian and altruistic purposes are often reasons for foreign assistance. Aid may be given by individuals, private organizations, or governments. Standards delimiting exactly the types of transfers considered "aid" vary from country to country. For example, the United States government discontinued the reporting of mili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petit Manan National Wildlife Refuge
Petit Manan National Wildlife Refuge is a National Wildlife Refuge in the state of Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and .... It is one of the five refuges that together make up the Maine Coastal Islands National Wildlife Refuge, along with Cross Island, Franklin Island, Seal Island, and Pond Island. Geography Petit Manan NWR has a surface area of . It is part of the town of Steuben. The refuge has four mainland divisions. The Petit Manan Point Division. The Gouldsboro Bay Division protects . The Sawyer's Marsh Division. The Corea Heath Division. Petit Manan NWR includes acres on 41 islands, stretching the entire coastline of Maine. ReferencesMaine Coastal Islands National Wildlife Refuge National Wildlife Refuges in Maine Protected areas of H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, multi-mission service unique among the United States military branches for having a maritime law enforcement mission with jurisdiction in both domestic and international waters and a federal regulatory agency mission as part of its duties. It is the largest and most powerful coast guard in the world, rivaling the capabilities and size of most navies. The U.S. Coast Guard is a humanitarian and security service. It protects the United States' borders and economic and security interests abroad; and defends its sovereignty by safeguarding sea lines of communication and commerce across vast territorial waters spanning 95,000 miles of coastline and its Exclusive Economic Zone. With national and economic security depending upon open global trade a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Register Of Historic Places Listings In Washington County, Maine
This is a list of the National Register of Historic Places listings in Washington County, Maine. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Maine, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 101 properties and districts listed on the National Register in the county. Another property was once listed but has been removed. Current listings Former and moved listings See also * List of National Historic Landmarks in Maine * National Register of Historic Places listings in Maine References {{Washington County, Maine Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United Sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses Completed In 1823
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signal for reefs and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lighthouses On The National Register Of Historic Places In Maine
A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lens (optics), lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, rocks, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and has become uneconomical since the advent of much cheaper, more sophisticated and effective electronic navigational systems. History Ancient lighthouses Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire would improve the visibility, placing the fire on a platform became a practice that led to the development of the lighthouse. In antiquity, the lighthouse functioned more as an entrance marker to ports than as a warning signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
