High Quality Content by WIKIPEDIA articles! The Echo class was a class of inshore survey vessel built for the British Royal Navy in 1958-59. The class was designed to operate in close waters such as harbour approaches, shipping lanes, rivers and estuaries. Together, the ships of this class formed the Royal Navy's Inshore Survey Squadron. The class consisted of three ships, and were of composite (wood on metal frames) construction. They were based on the same basic hull as the Ham class minesweeper and the Ley class minehunter.

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