NZ Topo - object class dry_dock_poly

This page describe the dry_dock_poly object class used to represent objects in the NZTopo topographic database.


An artificial basin fitted with gate or caisson into which a vessel may be floated and from which the water may be pumped out to expose the bottom of the vessel

Topo50 description

At the time of writing, there was only one known dry dock in the country - see map example.

Representation specification

Representation specification showing dry_dock_poly

Click to enlarge image

Class attributes

Object classdry_dock_poly
Entity classDRY DOCK
Additional entity classNot applicable
Object inheritancesimple_area
Entity sourceUS Standard Entity
Map series Topo50
LSLIFF object class307

Object attributes

AttributeLSLIFF code
Shapefile field
Data type
Attribute descriptionAttribute values*
A unique identifier for use on Topo50 data in the LINZ Data Service. This is not a universal ID. The intention is to manage these ID’s as persistent, however this is not guaranteed and there will be instances where what appears to be a minor change to a feature may result in a new ID being assigned.

* See explanation of attribute values for more information about how attribute values are represented.

Change log

Feature versionRevisedDescription
52012-08-28Updated map image and aerial view; added representation specification and example feature photographs
42012-08-28Added scale-specific definitions
32008-04-10Removed reference to seed and void objects
22001-11-23Unspecified update
11999-03-01intial status