answersLogoWhite

0

Lighthouses

A lighthouse is a structure used to house a light source that acts as an aid to navigation for those at sea. It can also use a sound source for warning. They are also used to warn of dangerous coastlines, reefs, and other hazards, while indicating safe entries to harbors. Most remaining lighthouses are automatic rather than being manned. Questions should relate directly to all aspects regarding lighthouses, including their use and history.

699 Questions

What did they make the lighthouse of Alexandria out of?

The most common belief is that the lighthouse was made of marble. However since it has never been discovered we cannot be certain.

Why is there a lighthouse in goulburn?

I think its there to warn planes of the hill

Which state has 62 lighthouses?

Maine has 62 lighthouses, one which was commissioned by George Washington, the Portland Head Light Station started in 1787 and completed in 1791.

Who invented the lighthouses?

Ptolemy II invented the lighthouse in 281 BCE. Some people probably lit fires on hillside before that, but Ptolemy II invented the actual lighthouse.

Water around cape hatteras is called?

The Atlantic Ocean is to the East, Pamlico Sound is to the West.

The amount of steps in Portland bill lighthouse?

153 steps, you can get a certifcate for climbing them.

What time do lighthouses switch on?

Times vary with the seasons and the times of sunset, but generally lighthouse lights come on at sunset, and before it is dark.

Why are lighthouses painted black and white?

A lighthouse may be painted black and white to help it stand out more, so it can be seen during the daytime by ships at sea.

What is a summary of Cape Hatteras Lighthouse?

The Cape Hatteras lighthouse is a famous lighthouse on Hatteras Island, North Carolina, USA. It is the tallest lighthouse in use in the US. Completed in 1803, the original structure was eventually demolished following the construction of a new and improved lighthouse between 1868 and 1870. The new lighthouse became the tallest lighthouse tower in the US, with the light projecting from 191 feet, or 58 m, above the water. The tower stands 63 metres tall from the base of the foundation to the tip of the roof, and the structure contains 268 steps.

By 1935, erosion had so threatened the tower that the water was actually reaching its base. After attempts to hold back the erosion process through dikes and breakwaters proved futile, the tower was abandoned and a functional light placed on a steel tower further inland from the shore. After a few years, wooden revetments, a more effective method for erosion control, helped reclaim some of the shoreline, and the lighthouse was declared safe for use and recommissioned on 23 January 1950.

Further erosion of the shoreline necessitated the relocation of the entire tower in 1999. The granite underlying the foundation of the lighthouse was mined out and replaced with steel supports. Using hydraulic jacks, these steel supports then moved the entire tower along a system of track beams. The actual removal operation began on 17 June 1999 and was completed on 9 July 1999. On this date, the tower was then lowered onto a new concrete pad 2900 feet (883m) away, and its temporary steel foundation replaced with brick. The lighthouse survived the move and a ceremonial relighting was held on 13 November that year.

Does any lighthouse have any mechanics in it?

Nowadays lighthouses are largely automatic and are unmanned. Though a very few remain with personnel permanently resident there is a rigorous servicing schedule for them.

What is the largest object ever moved?

The largest man made object ever moved was the Troll oil platform

in 1996 in Norway. its 250 tons

What is the paint formula for Taxicab Yellow?

call your cab company and ask them the fleet manager or he can guide you to the right person

Which was the first Epcot World Showcase pavilion to be built?

They were all built at the same time, with the exception of Morocco & Norway which were built later, so there was no real 'first' one.

Has Cape Lookout Lighthouse ever been painted?

The Cape Lookout Lighthouse has been painted many times. It was originally painted red and white, but when it was rebuilt the new lighthouse was painted with black and white diamonds. It is repainted every few years.

Why are lighthouses so big?

The reason is that the lighthouse needs to be seen out in a considerable distance out into the ocean.

What is the name of the lighthouse that was moved to protect it from the ocean?

The Cape Hatteras lighthouse was under threat from the ocean as the beachside eroded. The actual removal operation of Cape Hatteras lighthouse began on 17 June 1999 and was completed on 9 July 1999