Mangawhai Heads Data

Raster chart image of: NZ 5219 Approaches to Marsden Point

This data was compiled for the use at the following scale: 1:50000

File reference: NZ521901

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT TO BE USED FOR NAVIGATION.

The hydrographic raster data made available through the LINZ Data Service is based on the Paper Navigational Charts published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ).

The online New Zealand Chart Catalogue provides more detailed and the most up to date information about New Zealand charts: New Zealand Chart Catalogue

Information on symbols and abbreviations used on nautical charts: Symbols and Abbreviations

Hydrographic standards and specifications for nautical charts and publications: Standards and Specifications

The angle between the magnetic and geographic (true) north at a location, expressed in degrees east or west from the direction of true north.

S-57 Object Class: Magnetic variation

S-57 Acronym: MAGVAR

This data was compiled for the use in the scale range 1:4,000 to 1:22,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

This layer provides the extents of the data incorporated into an adjustment which has been completed as a Wide Area Cadastral Adjustment (WACA). These adjustments are undertaken in areas where there is already substantial survey-accurate data, but there are some inconsistencies in the data resulting from small changes to geodetic control coordinates and/or the progressive submission of additional Cadastral Survey Datasets (CSDs). The improvement of coordinates is controlled by a mathematical adjustment process using a Least Squares methodology. The adjustment/integration process results in increased mapping accuracy of surrounding spatial objects (e.g. parcels), the effect of which is some new observations or parcels appear to move. The extent of the change largely depends upon the accuracy of the underlying data. In general, movements will be no more than 10cm, as the WACAs target areas where coordinates already have fairly high spatial accuracy.

A deliberately formed route of a lesser quality than a road

Data Dictionary for track_cl: apps.linz.govt.nz/topo-data-dictionary/index.aspx?...

This layer is a component of the Topo500 data. The Topo500 map series will, when it is created, provide updated topographic mapping for the New Zealand mainland at 1:500,000 scale.

An area of the bottom of a body of water which has been deepened by dredging.

S-57 Object Class: Dredged area

S-57 Acronym: DRGARE

This data was compiled for the use in the scale range 1:90,000 to 1:350,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

An area in which vessels anchor or may anchor.

S-57 Object Class: Anchorage area

S-57 Acronym: ACHARE

This data was compiled for the use in the scale range 1:4,000 to 1:22,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

An area of the bottom of a body of water which has been deepened by dredging.

S-57 Object Class: Dredged area

S-57 Acronym: DRGARE

This data was compiled for the use in the scale range 1:4,000 to 1:22,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

An inclined surface.

S-57 Object Class: Sloping ground

S-57 Acronym: SLOGRD

This data was compiled for the use in the scale range 1:90,000 to 1:350,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

The disturbance of water caused by the interaction of any combination of waves, currents, tidal streams, wind, shoal patches and obstructions.

S-57 Object Class: Water turbulence

S-57 Acronym: WATTUR

This data was compiled for the use in the scale range 1:90,000 to 1:350,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/

Also called radio reporting points, they have been established in certain busy waterways and port approaches to assist traffic control. On passing these points or crossing a defined line vessels are required to report on VHF to a Traffic Control Centre.

S-57 Object Class: Radio calling-in point

S-57 Acronym: RDOCAL

This data was compiled for the use in the scale range 1:22,000 to 1:90,000.

THIS DATA DOES NOT REPLACE NAUTICAL CHARTS AND MUST NOT BE USED FOR NAVIGATION.

This data is based on the S-57 data format used in Electronic Navigational Charts (ENCs) published and maintained by the New Zealand Hydrographic Authority at Land Information New Zealand (LINZ). Refer to the following link for information about S-57 data: www.linz.govt.nz/hydro/regulation/