Hello
The answer is yes you do need something to replace the rubber gasket. This stops the water being forced up the centreboard case, especially when sailing downwind at speed, without a gasket there would be a water spout at the back of the centreboard case!
Older boats in their day would have had rubber like yours, held down by a thin aluminium or brass strip on either side. These days the rubber has been replaced with various sail cloth or plastic versions, some of which can be glued in place. Boat Chandlers stock various options, contact any local chandler that deals with dinghy equipment and they should be able to help.
Hope this helps, get back to us if you need any more information.
The answer is yes you do need something to replace the rubber gasket. This stops the water being forced up the centreboard case, especially when sailing downwind at speed, without a gasket there would be a water spout at the back of the centreboard case!
Older boats in their day would have had rubber like yours, held down by a thin aluminium or brass strip on either side. These days the rubber has been replaced with various sail cloth or plastic versions, some of which can be glued in place. Boat Chandlers stock various options, contact any local chandler that deals with dinghy equipment and they should be able to help.
Hope this helps, get back to us if you need any more information.