Vessel safety surveys are important during the life of a vessel for better safety and security. These controls are directed by the classification societies and are very different (safety equipment, security, hoist, dock survey). For more details refer to the SOLAS (International Convention for the Safety of Life at Sea). In order for a ships to have the authorisation to navigate there are controls in the harbor and also controls for the cargo (chemical cargo and gas cargo are very strict). The seafarers must have the knowledge of surveys, to avoid human and economic disasters.
Construction and equipment surveys
The surveys depend on the age and type of the vessel. The certificates given by the classification societies are valid for five years. During these five years different controls on the hull are made (there are three damage levels, if the vessel of the
damage levels check ups, it will not receive the certificate), and on the engine. To keep a certificate all requirements are compulsory. The Continuous survey hull (CSH) and Continuous survey machinery (CSM) are controls for the mooring, anchoring and the propulsion system. The special survey cycle (SS) is an alternative for the CSH and Engine survey (ES) for the CSM. The annual survey (AS) is a control of the safety equipment. There is an annual inspection that can be done during the three months period before or the three months after the annual date .There must be two docking survey (DS) during the five years of the certificate but it is possible to avoid one survey by doing the In-water Survey with the help of a diving inspection. The intermediate survey (ITSS) is between the second and the third year, and the subject of this survey depends on the age the vessel (generally, it is an inspection of ballast more or less detailed). For the chemical vessel, oil carrier surveys are more and more intensive with the age.
In armed conflict and in daily life, ships have become an integral part of modern commercial and military systems. Fishing boats are used by millions of fishermen throughout the world. Military forces operate vessels for naval warfare and to transport and support forces ashore. Commercial vessels, nearly 35,000 in number, carried 7.4billion tons of cargo in 2007. As of 2011, there are about 104,304 ships with IMO numbers in the world.
Ships were always a key in history's great explorations and scientific and technological development. Navigators such as Zheng He spread such inventions as the compass and gunpowder. Ships have been used for such purposes as colonization and the slave trade, and have served scientific, cultural, and humanitarian needs. After the 16th century, new crops that had come from and to the Americas via the European seafarers significantly contributed to the world population growth.Ship transport has shaped the world's economy into today's energy-intensive pattern.
Ship's A.I. was created untold millennia ago by the Celestials as the operating system for a data collection device. The Celestials had genetically manipulated humanity, and they left the Ship in the area that would come to be known as Mongolia to monitor humanity's progress.
Circa 1100 A.D., a Mongolian immortal known as Garbha-Hsien (later known as Saul), discovered the Ship and lived next to it while he researched its mysteries. Saul never attempted to enter the Ship.
In time, the Egyptian immortal En Sabah Nur learned of Saul and sought him out as another immortal. In a confrontation, En Sabah Nur slew all of Saul's guards. Saul then sought to humble his fellow "forever-walker" by revealing the secret titanic vessel. Having had previous experience with futuristic technology due to his encounters with Rama-Tut, Nur attacked Saul and left the other immortal for dead and entered the Ship. He emerged later as a vastly changed being who now called himself Apocalypse.
Statistical surveys are undertaken with a view towards making statistical inferences about the population being studied, and this depends strongly on the survey questions used. Polls about public opinion, public health surveys, market research surveys, government surveys and censuses are all examples of quantitative research that use contemporary survey methodology to answer questions about a population. Although censuses do not include a "sample", they do include other aspects of survey methodology, like questionnaires, interviewers, and nonresponse follow-up techniques. Surveys provide important information for all kinds of public information and research fields, e.g., marketing research, psychology, health professionals and sociology.
Surveying or land surveying is the technique, profession, and science of determining the terrestrial or three-dimensional position of points and the distances and angles between them. A land surveying professional is called a land surveyor. These points are usually on the surface of the Earth, and they are often used to establish land maps and boundaries for ownership, locations like building corners or the surface location of subsurface features, or other purposes required by government or civil law, such as property sales.
Surveying has been an element in the development of the human environment since the beginning of recorded history. The planning and execution of most forms of construction require it. It is also used in transport, communications, mapping, and the definition of legal boundaries for land ownership. It is an important tool for research in many other scientific disciplines.