Net tonnage ( NT , N.T. or nt ) is a dimensionless index calculated from the total moulded volume of the ship's cargo spaces by using a mathematical formula. Defined in The International Convention on Tonnage Measurement of Ships that was adopted by the International Maritime Organization in 1969, the net tonnage replaced the earlier net register tonnage (NRT) which denoted the volume of the ship's revenue-earning spaces in "register tons", units of volume equal to 100 cubic feet (2.83 m ). Net tonnage is used to calculate the port duties and should not be taken as less than 30 per cent of the ship's gross tonnage .
21-527: [REDACTED] Look up NT , nt , Nt , N.T. , or n't in Wiktionary, the free dictionary. NT or nt may refer to: Language [ edit ] Nt (digraph) , a letter in several African languages n't , a contracted form of the English word not Music [ edit ] Neighbor tone , a nonchord tone that passes from
42-531: A chemical compound making up DNA or RNA. The abbreviation is used to specify DNA/RNA length. FloraNT (Index herbariorum code for Northern Territory Herbarium in Alice Springs) Technology [ edit ] Nested Task flag , a flag in the FLAGS register of Intel x86 processors Windows NT , a family of operating systems from Microsoft Network termination , a device connecting
63-689: A chord tone directly above or below it and resolves to the same tone "N.T.", a song by Kool & the Gang from the 1971 album Live at PJ's "N.T.", a song by Q-Tip from the 1999 album Amplified Organisations [ edit ] NT Corp [ id ] (abbreviation of Nurdin Tampubolon Corporation), an Indonesian group of companies National Trust , a British heritage conservation charity Royal National Theatre , London, England New Trier High School , Winnetka, Illinois, United States Nortel (stock symbol: NT),
84-512: A maximum draft assigned by its national government, that value is used, if it has been assigned a maximum. Finally, for a ship to which none of the above applies, the value of d is taken as 75 per cent of the moulded depth amidships. The Net tonnage calculation is defined in Regulation 4 of Annex 1 of The International Convention on Tonnage Measurement of Ships, 1969 . It is based on three main variables: The first step in calculating NT
105-509: A non-SI name for a unit of luminance Niton (element) (Nt), obsolete name of the element radon Biology and medicine [ edit ] Near-threatened species , a category in the IUCN Red List Neurotransmitter , chemical signals used in communication between neurons Normotension , normal level of blood pressure Nuchal translucency scan , a sonographic prenatal screening scan nt, nucleotide ,
126-512: A posited fictional state in which the town of Springfield is located in The Simpsons TV show No Trump, in contract bridge and other card games See also [ edit ] Neutronium , a hypothetical substance composed purely of neutrons Neo Tokyo (disambiguation) , a fictional futuristic version of Tokyo All pages with titles beginning with NT All pages with titles beginning with nt Topics referred to by
147-420: A telecommunications equipment company Places [ edit ] Northern Territory , Australia Northwest Territories , Canada New Territories , Hong Kong Netherlands Antilles (1954–2010), Caribbean, by FIPS 10-4 code Saudi Arabian–Iraqi neutral zone (1922–1991), by ISO 3166-1 code Science [ edit ] Nanotesla (nT), an SI unit of magnetic flux density Nit (unit) (nt),
168-453: Is different from Wikidata All article disambiguation pages All disambiguation pages NT">NT The requested page title contains unsupported characters : ">". Return to Main Page . Net tonnage Net tonnage is not a measure of the weight of the ship or its cargo, and should not be confused with terms such as deadweight tonnage or displacement . Also, unlike
189-504: Is the basis for satisfying manning regulations and safety rules. Tonnage is also the basis for calculating registration fees and port dues. One of the Convention's goals was to ensure that the new units "did not differ too greatly" from the traditional GRT and NRT units. Both NT and GT are obtained by measuring ship's volume and then applying a mathematical formula. Net tonnage is based on "the moulded volume of all cargo spaces of
210-632: Is to find the value known as K 2 , a multiplier based on V c . It is obtained by using the following formula: K 2 = 0.2 + 0.02 × log 10 ( V c ) {\displaystyle K_{2}=0.2+0.02\times \log _{10}(V_{c})} And then these three values are used to calculate NT using this formula: N T = K 2 × V c × ( 4 d 3 D ) 2 {\displaystyle NT=K_{2}\times V_{c}\times ({\tfrac {4d}{3D}})^{2}} Where
231-695: The 1990s Other uses [ edit ] New Taiwan dollar (NT$ or NT), the currency of Taiwan Norrköpings Tidningar , a Swedish newspaper Newfoundland Time , a time zone in Atlantic Canada Neurotypical or neurologically typical, someone whose brain development and activity are typical New Testament , the second part of the Christian Bible Intuitive thinker, one of the Myers–Briggs Type Indicators North Takoma,
SECTION 10
#1732765503156252-622: The Summer Load Line draft is used, with the exception of cases where that is a timber load line. For passenger ships, the draft used is the deepest subdivision load line assigned in accordance with the International Convention for the Safety of Life at Sea . Otherwise, if a ship has been assigned a load line by its national government, the draft for that summer load line is used. If the ship has no load line, instead,
273-449: The customer's data or telephone equipment to the local exchange carrier's line NT (cassette) , a Sony microcassette-based digital memo recorder Analogue Nt , an aftermarket Nintendo Entertainment System Transport [ edit ] Net tonnage , a measurement used for ships Binter Canarias (IATA airline designator) Zeppelin NT , a type of German airship manufactured since
294-434: The factor ( 4 d 3 D ) 2 {\displaystyle ({\tfrac {4d}{3D}})^{2}} shall not be taken as greater than unity, the term K 2 × V c × ( 4 d 3 D ) 2 {\displaystyle K_{2}\times V_{c}\times ({\tfrac {4d}{3D}})^{2}} will not be less than 0.25 GT, and
315-411: The factor ( 4 d 3 D ) 2 {\displaystyle ({\tfrac {4d}{3D}})^{2}} will not exceed 1, the term K 2 × V c × ( 4 d 3 D ) 2 {\displaystyle K_{2}\times V_{c}\times ({\tfrac {4d}{3D}})^{2}} will not be less than 0.25 GT, and
336-466: The final value of NT shall not be taken as less than 0.30 GT. The difference between the cases of 12 of fewer passengers and 13 or more passengers is due to a restriction given in the net tonnage definition that states "...when N 1 + N 2 is less than 13, N 1 and N 2 shall be taken as zero." In the United States , net tonnage is used to determine eligibility for registering boats with
357-494: The final value of NT shall not be taken as less than 0.30 GT. When calculating NT for ships certified to carry 13 or more passengers, an additional term is used in the NT formula. It is based on three additional variables: First, a multiplier K 3 , based on the ship's gross tonnage is found, K 3 = 1.25 × ( G T + 10000 ) 10000 {\displaystyle K_{3}={\frac {1.25\times (GT+10000)}{10000}}} Then
378-407: The net register tonnage, the net tonnage is unitless and thus can not be defined as "tons" or "net tons". The International Convention on Tonnage Measurement of Ships, 1969 was adopted by IMO in 1969. Ships built before that date were given 12 years to migrate from their existing tonnage to use of NT and GT. The phase-in period was provided to allow ships time to adjust economically, since tonnage
399-411: The net tonnage is calculated: N T = K 2 × V c × ( 4 d 3 D ) 2 + K 3 × ( N 1 + N 2 10 ) {\displaystyle NT=K_{2}\times V_{c}\times ({\tfrac {4d}{3D}})^{2}+K_{3}\times (N_{1}+{\frac {N_{2}}{10}})} Where
420-440: The same term [REDACTED] This disambiguation page lists articles associated with the title NT . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=NT&oldid=1244750392 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description
441-429: The ship" while gross tonnage is based on "the moulded volume of all enclosed spaces of the ship". In addition, a ship's net tonnage is constrained to be no less than 30% of her gross tonnage . The net tonnage calculation is based on a number of factors, one of which is the moulded draft d . The choice of the value to use for d can be complicated. For ships subject to the International Convention on Load Lines ,
SECTION 20
#1732765503156#155844