For May , the America 's cup has been at the forefront of yacht design . Since its launch 162 years ago , the competition -- which kicked off in San Francisco last month -- has been at the forefront of yacht design , encouraging the best sailing clubs in the world to invest big in their seafaring weapons of choice . From Scotland 's traditional boats to modern 'winged ' yachts , CNN looks at highlights . Includes Scotland 's controversial keel , which saw U.S. lose Cup for first time . British sailor Andrew Simpson 's death while training in more than 160 years has raised safety questions .
For May , the America 's cup has been at the forefront of yacht design . From Scotland 's traditional boats to modern 'winged ' yachts , CNN looks at highlights . Includes Scotland 's controversial keel , which saw U.S. lose Cup for first time . British sailor Andrew Simpson 's death while training in more than 160 years has raised safety questions .