NZMariner Technical Documentation

Format & compatibility

NZMariner has been compiled using the Hydrographic Chart Raster Format (HCRF) v2.0. This format is also used by the United Kingdom Hydrographic Offices' ARCS, (Admiralty Raster Chart Service) and Australian Hydrographic Services' Seafarer products. This compatibility allows mariners to utilise additional RNC coverage's outside of New Zealand waters.

Chart updates are supplied as "tiles", as RNC charts consist of numerous 25mm 2 tiles. Any alterations or Notices to Mariners are made on replacement tiles. These updates are applied through the ECS or ECDIS, which replaces old tiles with those provided. Once installed the user can view the changes but can only operate the system with the updated information displayed.

Encryption

NZMariner data is encrypted by LINZ to protect the integrity of the data from unofficial modifications. Permits are provided, which the Electronic Chart Systems (ECS) use to decrypt the data and display the information contained on the CDs.

Use

Users require a computer, an ECS or ECDIS, and NZMariner. Computer requirements will depend on the ECS or ECDIS used to display NZMariner. Refer to your software manufacturer or retailer for further details. Depending on the ECS or ECDIS, other external sensors may also be attached to the system (eg GPS, Autopilot or Radar). Once these have been connected to the ECS or ECDIS, NZMariner can be installed and used. NZMariner can be used on only one system at a time and can not be used over a network. Users must accept the terms and conditions of the NZMariner licence agreement before they access the data.

Mariners have access to numerous charts and must ensure they always use the appropriate scale chart for the purpose of navigation. Please note that due to ECS or ECDIS functionality, the image on the screen may appear at times to be at a different scale to the paper chart.

ECS software providers

NZMariner is encrypted and can only be used in ECS software produced by the following firms.

• Australian Defence Industries Ltd (ADI)
• Australia Hydrographic Service (AHS)
• Chersoft Ltd
• Commonwealth of Australia
• Euronav Ltd
• HSA Systems Ltd
• Intelliscan Ltd
• Offshore Systems Ltd (OSL)
• PC Maritime Ltd
• Sea Information Systems Ltd (SIS)
• SeaPlot International
• TMQ Electronics
• Ultra SML Technologies Ltd
• Wind Vector Ltd

Additional information

All NZMariner charts are on World Geodetic Datum 1984 (WGS84) and positions obtained from GPS systems may be plotted directly onto the data. Heights and depths are in metres, heights are above Mean High Water Springs and depths are above Chart Datum which is the Lowest Astronomical Tide.

Coverage

Charts available in NZMariner are listed below as at 1st May 2008.

21 (INT 641)	66	571	4632	5712	14051 (INT 51)
22 (INT 639)	68	614	4633	6142	14052 (INT 52)
23 (INT 640)	69	615	4634	6143	14060 (INT 60)
24	71	632	5111	6151	14061 (INT 61)
25 (INT 648)	72	661	5113	6152	14065 (INT 65)
26	73	681	5114	6153	14600 (INT 600)
27	76	827	5121	6154	14601 (INT 601)
28	82	845	5124	6212	14602 (INT 602)
29	93	885	5125	6321	14604 (INT 604)
31	222	945	5212	6324	14605 (INT 605)
41	223F	955	5214	6422	14606 (INT 606)
42	224F	2225	5215	6433	14607 (INT 607)
43	232	2325	5225	6612	14612
45	252	2411	5227	6821	14613
46	268	2681	5318	6823	14629 (INT 629)
48	286	2862	5321	6912	14630 (INT 630)
51	443	3111	5322	7132	14631 (INT 631)
52	463	4111	5324	7142	14638 (INT 638)
53	512	4212	5325	7622	14900 (INT 900)
54	521	4265	5327	7623	14901 (INT 9001)
55	522	4314	5328	7624	14902 (INT 9002)
56	531	4315	5411	7653	14906 (INT 9006)
57	532	4421	5412	7654	14907 (INT 9007)
58	533	4423	5413	8215	14908 (INT 9008)
61	534	4424	5423	8238	14909 (INT 909)
62	541	4432	5551	8275	14912 (INT 9012)
63	542	4541	5612	8655
64	561	4631	5613	9558