Nautical Chart Production

 
 

LINZ ENCs

This project involved the production of s-57 Electronic Nautical Charts (ENCs) for Land Information New Zealand (LINZ) Hydrographic section. GeoNet was provided only with raw images of the scanned paper charts. All images were geo-referenced and features were then compiled based on IHO S-57 Standards and LINZ specifications. Scripts for feature to S-57 object conversion were used and all data was run through validation procedures and third-party software. The ENCs were delivered and were later implemented by LINZ into their Hydrographic Production Database.

CHS Atlantic Paper Charts

Using Paper Chart Editor within the Hydrographic Production Database at Canadian Hydrographic Service (CHS) Atlantic, GeoNet was able to work directly with the client’s data and help them build a portfolio of paper charts available in their database. The project involved the creation of paper charts from source data existing in HPD. The workflow involved: the creation and layout of borders, marginalia, title blocks; loading of source data into Paper Chart Editor; ensuring the correct text and symbol rules were followed. Quality Control procedures were adhered to, and a detailed checklist was submitted to the client for reference. All work was completed remotely using a secure CITRIX connection.

CHS Quebec – S-102 Hi-Res Bathymetry

GeoNet was contracted to assist in the production of 86 High-Definition Gridded Bathymetry datasets of a portion of the St. Lawrence River. The final bathymetric surface was created by integrating a variety of source datasets, ranging from sparse sounding sets to much higher resolution grid data for channels. We also utilized Electronic Nautical Chart (ENC)-derived high-water lines along with the corresponding drying spot values. Project deliverables were provided to the client in a number of formats including CSAR, BAG, and 32-bit GeoTiff files.

CHS Central – Hydrographic Production Database Services

This project entailed converting over 20 datasets to S-57 objects and loading the data into HPD Source Editor. Once CHS had verified the loaded data in Source Editor, GeoNet was responsible for the creation of ENCs in Product Editor. The files then underwent Quality Control by both GeoNet and the Canadian Hydrographic Service (CHS) to ensure they conformed to IHO and CHS standards. All work was completed remotely using a secure CITRIX connection.