We must suppose for this that the canoist has attained the power of backing with perfect ease, for it will be quite necessary if he intends to take his boat safely through several hundred combinations of sunk rocks and breakers. Presuming this, the case in fig. 6 will be easy enough, though a little reflection will show that it might be very difficult, or almost impossible, if the canoist could give only a forward motion to the boat.
To pass most artistically, then, through the group of rocks in fig. 6 the stern should be turned towards A, as shown in the diagram, and the passage across the current, between A and B, is to be effected solely by backing water (and chiefly in this case with the left hand) until the furthest point of the right of the curve is reached, with the boat's length still as before in the position represented in the figure. Then the forward action of both hands will take the canoe speedily through the passage between B and C.
Cases of this sort are rendered more difficult by the distance of C from the point above A, where you are situated when the decision has to be made (and in three instants of time) as to what must be done; also, it would usually be imprudent to rise in the boat in such a place to survey the rock C from a better position.
If it is evident that the plan described above will not be applicable, because other and future circumstances will require the boat's bow to emerge in the opposite direction (pointing to the right), then you must enter forwards, and must back between B and C, so as to be ready, after passing C, to drive forward, and to the right. It is plain that this is very much more difficult than the former case, for your backing now has to be done against the full stream from the breaker B.
In all these instances the action of the wind has been entirely omitted from consideration, but it must not be forgotten that a strong breeze materially complicates the problem before the canoist. This is especially so when the wind is aft; when it is ahead you are not likely to forget its presence. A strong fair wind (that has scarcely been felt with your back to it) and the swift stream and the boat's speed from paddling being all in one direction, the breeze will suddenly become a new element in the case when you try to cross above a rock as in fig. 1, and find the wind carries you broadside on against all your calculations.
Nor have I any observations to make as to sailing among rocks in a current. The canoe must be directed solely by the paddle in a long rapid, and in the other places the course to be steered by a boat sailing is the same as if it were being merely paddled, though the action of the wind has to be carefully taken into consideration.
In all these things boldness and skill come only after lessons of experience, and the canoist will find himself ready and able, at the end of his voyage, to sail down a rapid which he would have approached timidly, even with the paddle, at the beginning.
But perhaps enough has been said for the experienced oarsman, while surely more than enough has been said to shew the tyro aspirant what varied work he has to do, and how interesting are the circumstances that will occupy his attention on a delightful river tour.
Note on the "Kent."—The narrative of a shipwreck referred to at [page 219] has been published 40 years ago, and in many foreign languages, but its circulation is very large at the present time. The following letter about one of the incidents related in the little book, appeared in the "Times" of March 22, 1866:—