Ghostly underwater gallery unveiled

• Time-lapse: Land of midnight sun
• Will women sailors prove muscle in race?

• Follow Shirley on Twitter
• Stay up to date with the latest from ISAF website

• Dispatch from Ensenada
• A return to sail boats?

• $6m man-made island
• The world's top five 'boatels'

Every month "MainSail" explores one of the world's most tough, exhilarating and glamorous sports. We bring viewers the latest on sailing events, upscale travel, technology and business.

Watch Mainsail at the following times (GMT):

Thursday June 20 at 0930 and 1630 and Saturday June 22 at 0730.

Read more about CNN's special reports policy.

• Circus family on a sailboat
• Computer hackers conquer high seas

• Can 'flying' boat smash speed record?
• Richard Branson's speedboat returns

• Psychedelic graffiti transforms ship
• Shipwreck's ghostly underwater art gallery

• Bubbles and boar: A very British race
• Boats just keep getting bigger

• Mississippi River pirate ship's loot
• Best tropical island sailing spots
• Inside the mind of a yachting cartoonist
• Sailing the world's most beautiful lakes
• Naked rowers break record books
• 'World's unluckiest boat' bows out
• Reliving Antarctic's 'greatest survival story'
• Seven distant and dangerous retreats
• Rising tide: China's superyachts
• Incredible racing images from the sea
• Drama grips 'world's toughest race'
• Luxury gadgets making a splash
• MainSail archive

• Scouring the sea for sunken treasures
• Swedish shipwreck hunters' mysterious find