Commodity Trade Subset   
Statistics on the International trade cover the quantities and values of annual imports and exports ( including re-exports when applicable) of fish and fishery products.
In accordance with the internationally recommended practice, import statistics include fish caught by foreign fishing craft, whether or not processed on board, landed in domestic ports; export statistics include fish caught by domestic fishing craft, whether or not processed on board, landed in foreign ports.

Two systems of recording trade are in common use, differing mainly in the way warehoused and re-exported goods are recorded: special trade and general trade.
Special trade
is a system of recording imports for domestic consumption on the one hand and exports of domestic goods on the other.

Special imports
include goods for domestic consumption and withdrawals from bonded warehouses or free zones for purposes of domestic consumption.

Special exports
comprise exports of goods wholly or partially produced or manufactured in the country, together with exports of 'nationalized goods', but not of goods held in bonded warehouses or free zones.

General trade
is a system which records total imports and total exports including re-exports.

General imports
consist of all imports into a country, including goods for domestic consumption and imports into bonded warehouses or free zones.

General exports
consist of the combined total of national exports and re-exports. Re-exports, in the general trade system, consist of the outward movement of nationalized goods plus goods that, after importation, move outward from bonded warehouses or free zones without having been transformed.

Export and import data in the Commodities production and trade database relate to general trade for all countries except nearly half, which report on the basis of special trade

Dimension : Quantity of imported, exported and re-exported fish and fishery products
Type : Quantity
Unité : Tonnes
Description  : Data series on imports, exports and re-exports of fish and fishery products are reported in terms of quantity
Plus d'infos : Quantity is measured in national units, converted to tonnes. Quantities refer to the net weight of the commodities, i.e. excluding the weight of the container and any liquid added for preservation or flavour
Dimension : Value of imported, exported and re-exported of fish and fishery products
Type : Value
Unité : Thousand US$
Description  : Data series on imports, exports and re-exports are also reported in terms of value
Plus d'infos : Values are expressed in national currency unit and converted to thousand US$. The conversion from national currencies into US$ is done by applying average annual exchange rates from the International Monetary Fund.
In general, exports values are f.o.b. (free-on-board) and import values are c.i.f. (cost, insurance, freight)
Source des données   
There are many different sources for foreign trade statistics. Data in the time series may have been obtained by more than one of the following sources:
  1. National files on tapes (non standard reporting, as to data format and classifications used), CD-ROM, diskettes, E-mail attachments;
  2. Trade yearbooks, bulletins and other published material (including Internet released information);
  3. Agricultural trade questionnaires (standard forms, managed by ESS but including relevant fishery commodities codes);
  4. FIPS trade questionnaire FISHSTAT FTR (few selected countries only);
  5. Comtrade (the UN-STAT standardized trade database)
Assurance de la qualité   
Complete coverage of commodities' trade
Méthode de collecte : Import and trade statistics are obtained primarily from country reports provided to FAO in published form or on computer tapes. About 100 countries including the major fish trading nations, provide data on magnetic tapes.
Méthode de traitement : Whenever the data received on tapes from FAO/ESS are incomplete as to coverage these are integrated with other statistics received in printed form (for example, landings abroad).
When no official statistics are submitted by a country, and no alternative source is available, the commodity quantity and value is estimated generally on the basis of mirror statistics of major trading partners.

Consistent and Accurate
To facilitate the reporting of consistent and accurate world commodities' trade FAO/FIPS provides internationally agreed definitions for the statistical treatment of transhipment and fish landings abroad in the international trade.
Fishing vessel production
can be landed and sold at foreign ports or off-loaded onto a foreign country vessel in international waters and thus sold to a foreign country. In both cases, according to definitions used to compile fishery statistics, these are considered respectively as exports and imports.

Mécanisme de validation : Comparison with Catch Statistics, after application of appropriate factor to convert product to live weight.
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