Under Water - Suunto Diving Guia Del Usuario

ings at the diving site, paying special attention
to memorizing the direction of the shoreline and
bearings of landmarks that may be of impor-
tance.

UNDER WATER

Natural aids to underwater navigation
- The underwater extension of the shore's
inclination tells the diver if he is following the
shoreline. Be extremely careful, however:
underwater ridges may lead you astray. Sur-
face occasionally to check.
- The dip and stratification of rocks on the
shore can often be followed over large areas
under water.
- Sand ripples form long lines parallel to the
shore.
- The direction of currents should be noted by
their effect on algae or drifting particles. (Use
the compass to check the bearing of the cur-
rent).
- In shallow water, the sun's direction can be
seen from shadows on the bottom, or by
looking toward the surface.
- Swimming in a straight line along the bottom
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