PS Advisor: Cure for the Ventilating Rudder

Got a really fast boat? Zipping along at over 10 knots there are any number of ways air can suck down the leeward side of the blade, spoiling the coanda effect. When planing there are often some air bubbles under boat. If the boat assumes a bow-down attitude under the pressure of the spinnaker or as waves pass, the transom can come a few inches out of the water. Above 15 knots theres enough suction…
To continue reading this article you must be a paid subscriber

Subscribe to Practical Sailor

Get the next year of Practical Sailor for just $34. And access all of our online content - over 4,000 articles - free of charge.
Subscribe today and save 42%. It's like getting 5 months FREE!