Both Oracle and Land Rover BAR added external rams to their test boats after initial testing. Some people have speculated that they found they needed more leverage, given the loads on the daggerboard bearings. Artemis Racing has built two test boats and both of them manage daggerboard rake without an external ram – clearly a better solution for windage.
Land Rover BAR “T2” on launch day – daggerboard cant ram is inside the hull.
Land Rover BAR “T2” when it relaunched in December. Notice the external ram.
Artemis Racing’s second “Turbo” boat in Bermuda. The daggerboard rake ram is inside the hull.