So although the Axeman is more stable the overall difference is small. The effect this will have on the overall stability can be investigated. Table 2.5 Calculated quasi-static stability data for the WSH design with the mast heeled to leeward. Not only are there areas of stability but the gradient of the curve around the upright area is shallower. This indicates that the craft is about two times more stable than the craft with an upright mast.
Moths are very demanding boats to sail.
The main sheet and rudder must be adjusted constantly to keep the craft sailing at the right angle of heel. The sail and foils add a large component of damping into the system making the task of sailing possible. An acceptable value of transverse stability must be defined. This value will vary between sailors and sailing conditions. It shall be concluded that in general the vertical centre of gravity height, wing bar angle, float size and heel angle of the mast are far more significant to transverse stability than GZ curves.