of the pole in the manner indicated in the drawing (Fig. 7). It took a
crew of two boys to manipulate this sail. In use, the pole of the rig was
carried on the shoulders, and the sail was guided by means of ropes
attached to the lower corners of the vertical spars. These ropes in
nautical language are called "sheets." The boy at the rear was the pilot
and did the steering, because his position behind the sail gave him an
unobstructed view in all directions. When changing tack the sail was
lifted overhead to the other side of the crew.


[Illustration: Fig. 6. Dimensions of Double Swedish Sail.
N. B.--The mark (') means feet and (") means inches.]

[Illustration: Fig. 7. Halyards Looped onto Pole.]

[Illustration: Fig. 8. The Double Swedish Sail.]

[Illustration: Fig. 9 Changing Tack.]



The Single Swedish Sail.

[Illustration: Fig. 10. The Single Swedish Sail.]

Another sail of similar form, but for use of one boy only, is shown in
Fig. 10. This had a height of six and one-half feet at the forward end and
three feet at the rear; and its length was five feet. This sail was very
satisfactory in light winds, owing to its great area. In use we found that
it was very important to keep the lower edge against the leg, as indicated