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  2. Voyage data recorder - Wikipedia

    en.wikipedia.org/wiki/Voyage_Data_Recorder

    A fixed Data Capsule of VDR mounted on a container ship. Voyage data recorder, or VDR, is a data recording system designed for all vessels required to comply with the IMO 's International Convention SOLAS Requirements (IMO Res.A.861 (20)) in order to collect data from various sensors on board the vessel. It then digitizes, compresses and stores ...

  3. Naval Inactive Ship Maintenance Facility - Wikipedia

    en.wikipedia.org/wiki/Naval_Inactive_Ship...

    A Naval Inactive Ship Maintenance Facility (NISMF) is a facility owned by the United States Navy as a holding facility for decommissioned naval vessels, pending determination of their final fate. All ships in these facilities are inactive, but some are still on the Naval Vessel Register (NVR), while others have been struck from the register.

  4. Floating production storage and offloading - Wikipedia

    en.wikipedia.org/wiki/Floating_production...

    A floating production storage and offloading (FPSO) unit is a floating vessel used by the offshore oil and gas industry for the production and processing of hydrocarbons, and for the storage of oil. An FPSO vessel is designed to receive hydrocarbons produced by itself or from nearby platforms or subsea template, process them, and store oil ...

  5. Vector database - Wikipedia

    en.wikipedia.org/wiki/Vector_database

    A vector database, vector store or vector search engine is a database that can store vectors (fixed-length lists of numbers) along with other data items. Vector databases typically implement one or more Approximate Nearest Neighbor (ANN) algorithms, [1] [2] so that one can search the database with a query vector to retrieve the closest matching database records.

  6. Heading (navigation) - Wikipedia

    en.wikipedia.org/wiki/Heading_(navigation)

    In navigation, the heading of a vessel or aircraft is the compass direction in which the craft's bow or nose is pointed. Note that the heading may not necessarily be the direction that the vehicle actually travels, which is known as its course or track. Any difference between the heading and course is due to the motion of the underlying medium ...

  7. Shapefile - Wikipedia

    en.wikipedia.org/wiki/Shapefile

    Shapefile. The shapefile format is a geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products. [1] The shapefile format can spatially describe vector features: points, lines, and ...

  8. Free-space bitmap - Wikipedia

    en.wikipedia.org/wiki/Free-space_bitmap

    The simplest form of free-space bitmap is a bit array, i.e. a block of bits. In this example, a zero would indicate a free sector, while a one indicates a sector in use. Each sector would be of fixed size. For explanatory purposes, we will use a 4 GiB hard drive with 4096- byte sectors and assume that the bitmap itself is stored elsewhere.

  9. Comparison of GIS vector file formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_GIS_vector...

    MapInfo TAB format – format using TAB, DAT, ID and MAP files (by MapInfo Corporation) National Transfer Format (NTF) – National Transfer Format (mostly used by the UK Ordnance Survey) Shapefile – open, hybrid vector data format using SHP, SHX and DBF files (by ESRI) Spatial Data File – high-performance geodatabase format, native to ...

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