Hydrography is the branch of applied sciences which deals with the measurement and description of the physical features of oceans , seas , coastal areas , lakes and rivers , as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defense, scientific research, and environmental protection.
39-407: The origins of hydrography lay in the making of charts to aid navigation, by individual mariners as they navigated into new waters. These were usually the private property, even closely held secrets, of individuals who used them for commercial or military advantage. As transoceanic trade and exploration increased, hydrographic surveys started to be carried out as an exercise in their own right, and
78-508: A country and the rest of the world is called foreign or international trade , which consists of import trade and export trade, both being wholesale in general. Commerce not only includes trade as defined above, but also the auxiliary services or aids to trade and means that facilitate such trade. Auxiliary services aid trade by providing services which such as transportation , communication , warehousing , insurance , banking , credit financing to companies, advertising , packaging , and
117-713: A country. International commerce can be regulated by bilateral treaties between countries. After the second world war and the rise of free trade among nations, multilateral arrangements such as the GATT and later the World Trade Organization became the principal systems regulating global commerce. The International Chamber of Commerce (ICC) is another important organization which sets rules and resolves disputes in international commerce. Where national government bodies undertake commercial activity with or inside other states, this commercial activity may fall outside
156-498: A general sense, business is the activity of earning money and making one's living through engaging in commerce. However, in a more specific sense, a business is an organization or activity for making a profit by providing goods and services which meet the needs of its customers or consumers. Business organizations typically operate in the primary (dealing with the extraction and sourcing of raw materials) and secondary (dealing with manufacturing intermediate or finished goods) sectors of
195-489: A hazard to navigation such as rocks, shoals , reefs and other features that obstruct ship passage. Bottom measurements also include collection of the nature of the bottom as it pertains to effective anchoring. Unlike oceanography, hydrography will include shore features, natural and manmade, that aid in navigation. Therefore, a hydrographic survey may include the accurate positions and representations of hills , mountains and even lights and towers that will aid in fixing
234-421: A preference for multi-use surveys, so that the same data collected for nautical charting purposes can also be used for bathymetric portrayal. Even though, in places, hydrographic survey data may be collected in sufficient detail to portray bottom topography in some areas, hydrographic charts only show depth information relevant for safe navigation and should not be considered as a product that accurately portrays
273-620: A remit to gather and distribute charts to HM Ships. Within a year existing charts from the previous two centuries had been collated, and the first catalog published. The first chart produced under the direction of the Admiralty , was a chart of Quiberon Bay in Brittany , and it appeared in 1800. Under Captain Thomas Hurd the department received its first professional guidelines, and the first catalogs were published and made available to
312-638: A sectional flow rate of moving water through a section and or current. Uncrewed Surface Vessels (USVs) and are commonly used for hydrographic surveys - they are often equipped with some sort of sonar. Single-beam echosounders, multibeam echosounders , and side scan sonars are all frequently used in hydrographic applications. The knowledge gained from these surveys aid in disaster planning, port and harbor maintenance, and various other coastal planning activities. Hydrographic services in most countries are carried out by specialized hydrographic offices . The international coordination of hydrographic efforts lies with
351-488: A ship's position, as well as the physical aspects of the sea and seabed. Hydrography, mostly for reasons of safety, adopted a number of conventions that have affected its portrayal of the data on nautical charts. For example, hydrographic charts are designed to portray what is safe for navigation, and therefore will usually tend to maintain least depths and occasionally de-emphasize the actual submarine topography that would be portrayed on bathymetric charts . The former are
390-681: A wider variety of goods and services, and encourages innovation and competition for better products . On the other hand, commerce can worsen economic inequality by concentrating wealth (and power ) into the hands of a small number of individuals , and by prioritizing short-term profit over long-term sustainability and ethical , social , and environmental considerations, leading to environmental degradation , labor exploitation and disregard for consumer safety . Unregulated, it can lead to excessive consumption (generating undesirable waste ) and unsustainable exploitation of nature (causing resource depletion ). Harnessing commerce's benefits for
429-481: Is a part of commerce and commerce is an aspect of business. Historian Peter Watson and Ramesh Manickam date the history of long-distance commerce from circa 150,000 years ago. In historic times, the introduction of currency as a standardized money facilitated the exchange of goods and services. Commerce was a costly endeavor in the antiquities because of the risky nature of transportation, which restricted it to local markets. Commerce then expanded along with
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#1732780466156468-496: Is more commonly called hydrometry or hydrology . Hydrography of rivers and streams is also an integral part of water management. Most reservoirs in the United States use dedicated stream gauging and rating tables to determine inflows into the reservoir and outflows to irrigation districts, water municipalities and other users of captured water. River/stream hydrographers use handheld and bank mounted devices, to capture
507-437: Is not concerned with the extraction of raw materials and the manufacturing of goods. Viewed in this way, commerce is a broader concept and an overall, all-encompassing aspect of business. Commerce provides the underlying large-scale transactional environment comprising all kinds of exchanges within which individual business organizations operate for generating profits. Commerce is distinguishable from trade as well. Trade
546-412: Is the transaction (buying and selling) of goods and services that makes a profit for the seller and satisfies the want or need of the buyer. When trade is carried out within a country, it is called home or domestic trade , which can be wholesale or retail . A wholesaler buys from the producer in bulk and sells to the retailer who then sells again to the final consumer in smaller quantities. Trade between
585-538: The European Union ) or coalitions (like BRICS ) leading to its reconfiguration. The English-language word commerce has been derived from the Latin word commercium , from com ("together") and merx ("merchandise"). Despite many similarities (to the extent that they are sometimes used as synonyms in layman's terms and in other contexts), commerce, business and trade are distinct concepts. In
624-478: The Industrial Revolution fundamentally reshaped commerce. In the post-colonial 20th century, free market principles gained ground, multinational corporations and consumer economies thrived in U.S.-led capitalist countries and free trade agreements (like GATT and WTO ) emerged, whereas communist economies encountered trade restrictions , limiting consumer choice . Furthermore, in
663-630: The International Hydrographic Organization . The United Kingdom Hydrographic Office is one of the oldest, supplying a wide range of charts covering the globe to other countries, allied military organizations and the public. In the United States, the hydrographic charting function has been carried out since 1807 by the Office of Coast Survey of the National Oceanic and Atmospheric Administration within
702-438: The U.S. Department of Commerce and the U.S. Army Corps of Engineers . Commerce Commerce is the large-scale organized system of activities, functions, procedures and institutions that directly or indirectly contribute to the smooth, unhindered distribution and transfer of goods and services on a substantial scale and at the right time, place, quantity, quality and price through various channels from
741-422: The mariner 's tools to avoid accident. The latter are best representations of the actual seabed, as in a topographic map, for scientific and other purposes. Trends in hydrographic practice since c. 2003–2005 have led to a narrowing of this difference, with many more hydrographic offices maintaining "best observed" databases, and then making navigationally "safe" products as required. This has been coupled with
780-426: The 15th to the early 20th century, European colonial powers dominated global commerce on an unprecedented scale, giving rise to maritime trade empires with their powerful colonial trade companies (e.g., Dutch East India Company and British East India Company ) and ushering in an unprecedented global exchange (see Columbian exchange ). In the 19th century, modern banking and related international markets along with
819-458: The actual shape of the bottom. The soundings selected from the raw source depth data for placement on the nautical chart are selected for safe navigation and are biased to show predominantly the shallowest depths that relate to safe navigation. For instance, if there is a deep area that can not be reached because it is surrounded by shallow water, the deep area may not be shown. The color filled areas that show different ranges of shallow water are not
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#1732780466156858-536: The best data available and will caveat its nature in a caution note or in the legend of the chart. A hydrographic survey is quite different from a bathymetric survey in some important respects, particularly in a bias toward least depths due to the safety requirements of the former and geomorphologic descriptive requirements of the latter. Historically, this could include echosoundings being conducted under settings biased toward least depths, but in modern practice hydrographic surveys typically attempt to best measure
897-480: The commissioning of surveys was increasingly done by governments and special hydrographic offices. National organizations, particularly navies , realized that the collection, systematization and distribution of this knowledge gave it great organizational and military advantages. Thus were born dedicated national hydrographic organizations for the collection, organization, publication and distribution of hydrography incorporated into charts and sailing directions. Prior to
936-507: The data are interchangeable, but marine hydrographic data will be particularly directed toward marine navigation and safety of that navigation. Marine resource exploration and exploitation is a significant application of hydrography, principally focused on the search for hydrocarbons . Hydrographical measurements include the tidal , current and wave information of physical oceanography. They include bottom measurements, with particular emphasis on those marine geographical features that pose
975-403: The depths observed, with the adjustments for navigational safety being applied after the fact. Hydrography of streams will include information on the stream bed, flows , water quality and surrounding land. Basin or interior hydrography pays special attention to rivers and potable water although if collected data is not for ship navigational uses, and is intended for scientific usage, it
1014-411: The economy and their goal is to sell raw materials or manufactured goods for profit. In the tertiary sector , businesses sell services for profit. Commerce, in contrast to the concept of business discussed above, deals with the movement and distribution of raw materials as well as finished or intermediate (but valuable) goods and services from the manufacturers to the end customers on a large scale. It
1053-712: The entire supply chain . Trade is the exchange of goods (including raw materials , intermediate and finished goods ) and services between buyers and sellers in return for an agreed-upon price at traditional (or online ) marketplaces . It is categorized into domestic trade , including retail and wholesale as well as local, regional, inter-regional and international/foreign trade (encompassing import , export and entrepôt/re-export trades). The exchange of currencies (in foreign exchange markets ), commodities (in commodity markets /exchanges) and securities and derivatives (in stock exchanges and financial markets ) in specialized exchange markets also falls under
1092-580: The entire world, and produced over 130,000 charts annually, of which about half were sold. The word hydrography comes from the Ancient Greek ὕδωρ ( hydor ), "water" and γράφω ( graphō ), "to write". Large-scale hydrography is usually undertaken by national or international organizations which sponsor data collection through precise surveys and publish charts and descriptive material for navigational purposes. The science of oceanography is, in part, an outgrowth of classical hydrography. In many respects
1131-495: The equivalent of contours on a topographic map since they are often drawn seaward of the actual shallowest depth portrayed. A bathymetric chart does show marine topology accurately. Details covering the above limitations can be found in Part ;1 of Bowditch's American Practical Navigator . Another concept that affects safe navigation is the sparsity of detailed depth data from high resolution sonar systems. In more remote areas,
1170-494: The establishment of the United Kingdom Hydrographic Office , Royal Navy captains were responsible for the provision of their own charts. In practice this meant that ships often sailed with inadequate information for safe navigation, and that when new areas were surveyed, the data rarely reached all those who needed it. The Admiralty appointed Alexander Dalrymple as Hydrographer in 1795, with
1209-540: The improvement of transportation systems over time. In the Middle Ages, long-distance and large-scale commerce was still limited within continents. Banking systems developed in medieval Europe, facilitating financial transactions across national boundaries. Markets became a feature of town life, and were regulated by town authorities. With the advent of the age of exploration and oceangoing ships, commerce took an international, trans-continental stature. Currently
Hydrography - Misplaced Pages Continue
1248-512: The mid-20th century, the adoption of standardized shipping containers facilitated seamless and efficient intermodal freight transport , leading to a surge in international trade. By the century's end, developing countries saw their share in world trade rise from a quarter to a third. 21st century commerce is increasingly technology-driven (see e-commerce ), globalized , intricately regulated , ethically responsible and sustainability -focused, with multilateral economic integrations (like
1287-502: The only available depth information has been collected with lead lines. This collection method drops a weighted line to the bottom at intervals and records the depth, often from a rowboat or sail boat. There is no data between soundings or between sounding lines to guarantee that there is not a hazard such as a wreck or a coral head waiting there to ruin a sailor's day. Often, the navigation of the collecting boat does not match today's GPS navigational accuracies. The hydrographic chart will use
1326-445: The original producers to the final consumers within local, regional, national or international economies. The diversity in the distribution of natural resources , differences of human needs and wants , and division of labour along with comparative advantage are the principal factors that give rise to commercial exchanges. Commerce consists of trade and aids to trade (i.e. auxiliary commercial services) taking place along
1365-467: The public and to other nations as well. In 1829, Rear-Admiral Sir Francis Beaufort , as Hydrographer, developed the eponymous Scale , and introduced the first official tide tables in 1833 and the first " Notices to Mariners " in 1834. The Hydrographic Office underwent steady expansion throughout the 19th century; by 1855, the Chart Catalogue listed 1,981 charts giving a definitive coverage over
1404-681: The reliability of international trans-oceanic shipping and mailing systems and the facility of the Internet has made commerce possible between cities, regions and countries situated anywhere in the world. In the 21st century, Internet-based electronic commerce (where financial information is transferred over Internet), and its subcategories such as wireless mobile commerce and social network -based social commerce have been and continue to get adopted widely. Legislative bodies and ministries or ministerial departments of commerce regulate, promote and manage domestic and foreign commercial activities within
1443-468: The services of commercial agents and agencies. In other words, commerce encompasses a wide array of political, economical, technological, logistical, legal, regulatory, social and cultural aspects of trade on a large scale. From a marketing perspective, commerce creates time and place utility by making goods and services available to the customers at the right place and at the right time by changing their location or placement. Described in this manner, trade
1482-566: The society while mitigating its drawbacks remains vital for policymakers , businesses and other stakeholders . Commerce traces its origins to ancient localized barter systems, leading to the establishment of periodic marketplaces, and culminating in the development of currencies for efficient trade. In medieval times, trade routes (like the Silk Road ) with pivotal commercial hubs (like Venice ) connected regions and continents, enabling long-distance trade and cultural exchange . From
1521-1414: The umbrella of trade. On the other hand, auxiliary commercial activities (aids to trade) which can facilitate trade include commercial intermediaries , banking , credit financing and related services, transportation , packaging , warehousing , communication , advertising and insurance . Their purpose is to remove hindrances related to direct personal contact, payments , savings , funding , separation of place and time, product protection and preservation, knowledge and risk . The broader framework of commerce incorporates additional elements and factors such as laws and regulations (including intellectual property rights and antitrust laws ), policies , tariffs and trade barriers , consumers and consumer trends , producers and production strategies, supply chains and their management , financial transactions for ordinary and extraordinary business activities, market dynamics (including supply and demand ), technological innovation , competition and entrepreneurship , trade agreements , multinational corporations and small and medium-sized enterprisess (SMEs), and macroeconomic factors (like economic stability ). Commerce drives economic growth , development and prosperity , promotes regional and international interdependence , fosters cultural exchange , creates jobs , improves people's standard of living by giving them access to
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