WATERPROOF MATERIAL: All Imray charts are printed on Pretex, a partially synthetic paper, which folds well and is durable in damp conditions. It may be drawn upon in both pencil and ball point pen. Imray charts are normally published to an approximately A4 fold format in robust PVC wallets. Flat sheets are available on request.

LAMINATING: Paper editions can be supplied laminated in plastic if required; they are corrected by hand to the time of despatch.

DATUM NOTES: Every chart includes details of the datum and projection upon which it was based to allow it to be used safely with satellite navigation systems.

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