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Sir Robin Knox-Johnston visits the National Museum of the Royal Navy in Portsmouth historic dockyard.

He tours the exhibits, learning about the role of the Royal Navy in the First World War.

Also this week, Bob Fisher expresses concerns about the America鈥檚 Cup, Neil Sackley explores the historic HMS M33 and we look back at the three Cunard Queens returning to Southampton.

The Solent is famous for its rich maritime heritage and H2O covers all aspects of life on the water - leisure, business and sport. Whether you're a sailing professional or just like watching the boats go by on the Solent, the programme will have something to appeal to you.

H2O is also available as a podcast.