Admiralty

Standard Nautical Charts numbered 1 to 4999, including International Charts, and UKHO reproductions of Australian, New Zealand and Japanese Charts

Thematic and Planning Charts

1. Mariners Routeing Guides
2. Maritime Security Charts
3. Magnetic Variation Charts
4. Anti-Piracy Planning Chart
5. Ocean Routeing Charts
6. Reference Charts and World Information Charts
7. Tidal Charts
8. Gnomonic Charts
9. Bathymetric Charts
10. UK Practice and Exercise Charts
11. Territorial Sea Baseline Charts
12. Hydrographic Practice and Symbols
13. Plotting Diagrams and Sheets
14. Instructional Charts
15. Meteorological Charts

Imray

Imray chart coverage is divided into several series:

Northwest Europe, C charts provide general scale coverage with plan insets at larger scales: Y charts and the 2000 series small format chart folios offer larger scale coverage

Mediterranean, G and M series provide general scale coverage with plan insets

Atlantic and Eastern Caribbean, Imray-Iolaire charts A, B, D, and E series provide general scale coverage with plan insets.

Sheet sizes

C charts: 787 x 1118mm (31” x 44”)

All others: 640 x 900mm (25” x 351/2”)

2000 series: A2 590 x 420mm

Imray charts set the standard for the leisure sector with award-winning cartography which features our distinctive colour scheme, coloured light sectors and fine overprinted latitude and longitude grids to make plotting easier.

Imray charts, based on up-to-date official surveys and receive continual attention and amendment by our staff, who monitor corrections to ensure that our charts are always as correct as possible when dispatched.

Corrections

Charts are correct to the date of printing and are supported by corrections which may be downloaded from this web site until a new edition is compiled. Once a new edition has been published the old edition cannot be corrected, is regarded as being unsafe for navigation and should be replaced.

Correction notices for individual Imray charts may also be downloaded from these pages.

Waterproof paper

Most Imray charts are published on Pretex, a partially synthetic paper, which folds well and is durable in damp conditions. It may be drawn on in both soft pencil and ballpoint pen. Imray charts are normally published to an approximately A4 fold format and supplied in robust PVC wallets. Flat sheets are available on request. All Imray charts are now based on WGS 84 datum. Apart from some of the Imray-Iolaire charts of the Caribbean Sea, all are metric.

Every chart includes details of the datum and projection on which it was based, to allow it to be used safely with GPS navigation systems.