Expert System - Sailing Ships by McGoo Software

Based on the responses you have made:

The vessel is probably a Sloop

Conclusion Notes:

This sailing boat has only one mast. It has only 1 foresail.

Expert System Rule:

IF the number of masts on the vessel is 1 only
AND the number of foresails the vessel has is 1 only
THEN the vessel is probably a Sloop.

Calculated Certainty Factor: 0.38 = probably