Knowledge (XXG)

IMO number

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above, "including fishing vessels of steel and non-steel hull construction; passenger ships of less than 100 gt, high-speed passenger craft and mobile offshore drilling units ; and all motorized inboard fishing vessels of less than 100 gt down to a size limit of 12 metres in length overall (LOA), authorized to operate outside waters under the national jurisdiction of the flag State". IMO resolutions are "for implementation on a
464: 44: 31: 814:{\displaystyle {\begin{aligned}{\mbox{check digit}}&=(11-(0\times 7+2\times 6+8\times 5+9\times 4+2\times 3+3\times 2){\bmod {1}}1){\bmod {1}}0\\&=(11-(0+12+40+36+6+6){\bmod {1}}1){\bmod {1}}0\\&=(11-100{\bmod {1}}1){\bmod {1}}0\\&=(11-1){\bmod {1}}0\\&=10{\bmod {1}}0=0\end{aligned}}} 161:
This resolution was revoked in 2013, being replaced by Resolution A.1078(28), which allowed application of the Scheme to ships of 100 gt and above, including fishing vessels. That in turn was revoked in 2017 and replaced by Resolution A.1117(30), which allows its application to ships of 100 gt and
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adopted a number of measures aimed at enhancing security of ships and port facilities. This included a modification to SOLAS Regulation XI-1/3 to require the IMO ship numbers to be permanently marked in a visible place either on the ship's hull or superstructure as well as internally and on the
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The IMO ship number scheme has been mandatory, for SOLAS signatories, for passenger and cargo ships above a certain size since 1996, and voluntarily applicable to various other vessels since 2013/2017. The number identifies a ship and does not change when the ship's owner, country of registry
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For new vessels, the IMO ship number is assigned to a hull during construction, generally upon keel laying. Many vessels which fall outside the mandatory requirements of SOLAS have numbers allocated by Lloyd's Register or IHS Markit in the same numerical series, including fishing vessels and
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In 1987 the IMO adopted Resolution A.600(15) to create the IMO ship identification number scheme aimed at the "enhancement of maritime safety and pollution prevention and the prevention of maritime fraud" by assigning to each ship a unique permanent identification number.
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had already introduced permanent numbers for all the ships in their published register in 1963, and these were modified to seven-digit numbers in 1969. It is this number series that was adopted as the basis for IMO ship numbers in 1987.
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used in some countries, e.g. the UK. The ship's certificates must also bear the IMO ship number. Since 1 July 2004, passenger ships are also required to carry the marking on a horizontal surface visible from the air.
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SOLAS regulation XI-1/3 was adopted in 1994 and came into force on 1 January 1996, making IMO ship numbers mandatory for those countries that have ratified (or acceded to, accepted, approved, adopted, etc.) SOLAS.
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The regulation provides that every ship owner and management company shall have a unique identification number. Other amendments require these numbers to be added to the relevant certificates and documents in the
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Unique and permanent numbers are needed due to the frequent changes in ships' names or other details. As one example, the vessel with IMO ship number "IMO 9176187" was built in Japan, has been through the names
335:. The integrity of an IMO number can be verified using its check digit. The checksum of an IMO ship identification number is calculated by multiplying each of the first six digits by a factor of 469: 960:
ENTRIES REQUIRED TO BE MADE IN THE OFFICIAL LOG BOOKS KEPT IN SHIPS REGISTERED IN THE UNITED KINGDOM The name of the ship, its port of registry, official number and gross or register tonnage.
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In May 2005, IMO adopted a new SOLAS regulation XI-1/3-1 on the mandatory company and registered owner identification number scheme, with entry into force on 1 January 2009.
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The checksum of an IMO company and registered owner identification number is calculated somewhat differently. The first six digits are multiplied by the respective weights:
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ship's certificates. Passenger ships should also carry the marking on a horizontal surface visible from the air. The enhanced regulations came into effect on 1 July 2004.
257: 151:, has operated under the flags of Panama, Liberia, Marshall Islands, the Republic of Korea and Sierra Leone, with numerous different owners/operators, and has had 67:; the IMO company and registered owner identification number is used to identify uniquely each company and/or registered owner managing ships of at least 100 1437: 158:
The original resolution applied to cargo vessels (meaning "ships which are not passenger ships") at least 300 gt and passenger vessels of at least 100 gt.
281:(ISPS). Like the IMO ship identification number, the company identification number is a seven-digit number with the prefix IMO. For example, for the ship 170: 331:
An IMO number is made of the three letters "IMO" followed by a seven-digit number. This consists of a six-digit sequential unique number followed by a
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Every ship shall be provided with an identification number which conforms to the IMO ship identification number scheme adopted by the Organization.
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is the manager of the scheme and, as such, identifies and assigns IMO numbers without charge. The organization was previously known as
1095: 984: 852: 923: 282: 918:. Letter to All IMO Member States. International Maritime Organization. 8 August 2016. Circular Letter No.1886/Rev.6. 71:(gt). The schemes are managed in parallel, but IMO company/owner numbers may also be obtained by managers of vessels 1279: 1177: 1452: 929: 237: 1387: 1202: 169:
Although not mandatory under SOLAS, since IMO ship numbers became available also to fishing vessels in 2013, some
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corresponding to their position from right to left. The rightmost digit of this sum is the check digit.
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Resolutions and Other Decisions (Resolutions 596 – 635): Assembly, Fifteenth Session, 9–20 November 1987
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and other organizations or states have made them mandatory for fishing vessels above a certain size.
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and then summed. From this sum modulo 11 is taken. The result of which is subtracted from 11. And
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is a generic term covering two distinct meanings. The IMO ship identification number is a unique
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Ship Management Ltd and IMO 5364264 to her former owner, Pullmantur Cruises Empress Ltd.
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of Majuro, Freetown and Cheju, but its IMO number has remained unchanged throughout.
68: 1051: 943: 307: 210: 1362: 913:"Implementation of resolution A.1078(28) - IMO ship identification number scheme" 1001:"Infosheet No. 45: Lloyd's Register/International Maritime Organisation Numbers" 332: 200: 846: 828: 219: 88: 1313: 215: 152: 849:, a comparable system for European barges and other inland waterway vessels 17: 1416: 43: 30: 1417:
IMO Identification Numbers for Ships, Companies & Registered Owners
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having IMO ship numbers. IMO numbers were introduced to improve
1153:"Resolution A.1117(30) - IMO Ship Identification Number Scheme" 287:(IMO 8024026), IMO 5304986 referred to the former ship manager 1128:"Resolution a.600(15) - IMO Ship Identification Number Scheme" 950:. The National Archives on behalf of HM Government. 1 May 1981 1225:"INTERNATIONAL CONVENTION FOR THE SAFETY OF LIFE AT SEA 2004" 979:. International Maritime Organization. 1988. pp. 17–20. 973:"Resolution A.600(15): IMO Ship Identification Number Scheme" 944:"The Merchant Shipping (Official Log Books) Regulations 1981" 789: 763: 725: 709: 674: 658: 587: 571: 189:
The IMO scheme and hence SOLAS regulation does not apply to:
1363:"How to compute check characters for Coden and IMO Number" 1316:. Food and Agriculture Organization of the United Nations 1293:
Ministry of Ecology, Sustainable Development and Energy
1158:. International Maritime Organization. 18 December 2017 473: 81:
International Convention for the Safety of Life at Sea
1133:. International Maritime Organization. 4 January 1988 467: 885: 883: 881: 879: 877: 875: 873: 871: 869: 448:10 of this difference results in the check digit. 1278: 813: 279:International Ship and Port Facility Security Code 1314:"Unique Vessel Identifier (UVI) - Global Record" 227:and structures classified in a similar manner 8: 1255:. Class NK. 25 December 2012. Archived from 1203:"United Nations Treaty Collection: Glossary" 265:Company and Registered Owner Regulation 2005 193:ships without mechanical means of propulsion 171:regional fisheries management organisations 258:Diplomatic Conference on Maritime Security 79:and reduce fraud and pollution, under the 792: 788: 766: 762: 728: 724: 712: 708: 677: 673: 661: 657: 590: 586: 574: 570: 472: 468: 466: 27:International ship identification number 1253:"IMO International Convention Calendar" 865: 199:ships engaged on special service (e.g. 921: 1183:. The Pew Charitable Trusts. May 2017 893:. International Maritime Organization 7: 275:International Safety Management Code 1438:International Maritime Organization 1030:GISIS: Ship and Company Particulars 61:International Maritime Organization 891:"IMO identification number scheme" 25: 1394:. European Maritime Safety Agency 1096:"Amendments to SOLAS Conventions" 241:"IMO 9319466" on the helideck of 1026:"Ship Particulars / IMO 9176187" 1006:. Lloyd's Register. 11 July 2012 853:Maritime Mobile Service Identity 831: 1361:Vuori, Teppo (21 August 2013). 1338:. IHS Fairplay. Archived from 759: 747: 721: 696: 670: 654: 618: 609: 583: 567: 495: 486: 91:) or name changes, unlike the 1: 1336:"Setting Industry Standards" 1448:Ship identification numbers 230:ships of war and troopships 105:IMO resolutions (1987–2017) 1469: 1178:"The IMO Number Explained" 1101:. Class NK. Archived from 252:Security enhancements 2002 304:Lloyd's Register-Fairplay 948:UK Statutory Instruments 51:displaying "IMO 9176187" 416:IMO number of a company 181:SOLAS regulation (1994) 1388:"Error messages table" 1076:. www.shipspotting.com 928:: CS1 maint: others ( 815: 327:IMO number of a vessel 256:In December 2002, the 248: 52: 40: 816: 240: 46: 33: 465: 451:Example for company 220:air cushion vehicles 1392:LRIT DB User Manual 318:commercial yachts. 125:Cornelie Oldendorff 924:cite press release 811: 809: 477: 289:Pullmantur Cruises 249: 53: 41: 1453:Ship registration 1423:IMO NUMBER SEARCH 1205:. treaties.un.org 1054:. Baltic Shipping 476: 34:"IMO 8814275" on 16:(Redirected from 1460: 1404: 1403: 1401: 1399: 1384: 1378: 1377: 1375: 1373: 1358: 1352: 1351: 1349: 1347: 1332: 1326: 1325: 1323: 1321: 1310: 1304: 1303: 1301: 1299: 1286: 1275: 1269: 1268: 1266: 1264: 1249: 1243: 1242: 1237: 1235: 1229: 1221: 1215: 1214: 1212: 1210: 1199: 1193: 1192: 1190: 1188: 1182: 1174: 1168: 1167: 1165: 1163: 1157: 1149: 1143: 1142: 1140: 1138: 1132: 1124: 1118: 1117: 1115: 1113: 1107: 1100: 1092: 1086: 1085: 1083: 1081: 1070: 1064: 1063: 1061: 1059: 1048: 1042: 1041: 1039: 1037: 1022: 1016: 1015: 1013: 1011: 1005: 997: 991: 990: 969: 963: 962: 957: 955: 940: 934: 933: 927: 919: 917: 909: 903: 902: 900: 898: 887: 841: 839:Transport portal 836: 835: 820: 818: 817: 812: 810: 797: 796: 778: 771: 770: 740: 733: 732: 717: 716: 689: 682: 681: 666: 665: 602: 595: 594: 579: 578: 478: 474: 112:Lloyd's Register 93:official numbers 21: 1468: 1467: 1463: 1462: 1461: 1459: 1458: 1457: 1428: 1427: 1413: 1408: 1407: 1397: 1395: 1386: 1385: 1381: 1371: 1369: 1360: 1359: 1355: 1345: 1343: 1342:on 3 March 2013 1334: 1333: 1329: 1319: 1317: 1312: 1311: 1307: 1297: 1295: 1277: 1276: 1272: 1262: 1260: 1259:on 3 March 2014 1251: 1250: 1246: 1233: 1231: 1230:. 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Index

IMO numbers

Eendracht

International Maritime Organization
ship identifier
gross tons
maritime safety
International Convention for the Safety of Life at Sea
flag state
official numbers
Lloyd's Register
home ports
regional fisheries management organisations
European Union
lightships
SAR
hopper barges
hydrofoils
air cushion vehicles
floating docks

M/S Finnmaid
Diplomatic Conference on Maritime Security
International Safety Management Code
International Ship and Port Facility Security Code
Atlantic Star
Pullmantur Cruises
S&P Global
Lloyd's Register-Fairplay

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