This chart covers the Rivers Colne & Blackwater and their approaches. It includes the latest official UKHO data, combined with additional information sourced from Imray's network to make it ideal for small craft. The chart has been fully revised throughout. Publisher: Imray, Laurie, Norie & Wilson Ltd Collection: Y Series Publication date: 2022 Dimensions: 330 x 238 x 7 Cover type: Sheet map, folded