Suunto Combo — обзор компасов для дайвинга: надежные и удобные решения [7/12]

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SUUNTO Console Compasses CB-71/SK-7/STD and CB-71/SK-7/DS

The high-quality, liquid-ﬁ lled Suunto diving compasses are durable, reliable and easy to use.

The CB-71/SK-7 is available in two versions: the CB-71/SK-7/STD for attachment on top of

the combo modules or the Cobra dive computer, and the CB-71/SK-7/DS for attachment on

the back side of the CB-ONE module.

Compass use for divers

General instructions

Usually a compass must be held precisely in a horizontal position, otherwise the needle will

sting. The SK-7 compass may however be inclined about ±30 degrees.

Sighting a compass bearing

Hold the compass so that the compass is in a horizontal position and the direction line points

away from you. Turn with the compass until the direction line points at your destination, then

turn the direction ring until the magnetic North needle is aligned between the slit marks. The

front end of the direction line on the SK-7 shows your compass bearing, and as long as the

North needle is aligned between the slit marks, the direction points toward your destination.

The SK-7 compasses also have a side reading window, which also enables you to take a

bearing by directing the compass towards the destination and by reading the compass bear-

ing from the side window. This bearing can be memorized by turning the direction ring to that

bearing.

Setting a given bearing or direction

The scale division on the SK-7 is 360 degrees clockwise from 0 degrees at North. Turn the

direction ring until the front end of the direction line is at the desired direction. Turn the com-

pass until the needle falls between the slit marks. The direction line now points in the desired

direction.

Magnetic declination

Maps and marine charts are drawn in correlation to the geographic poles, while the magnetic

compass needle is subject to magnetic declination which varies according to the location.

General orientation on the diving site

Before diving, check the main compass bearings at the dive site, paying special attention to

memorizing the direction of the shoreline and bearings of landmarks that may be of impor-

tance.

Natural aids to underwater navigation

• The underwater extension of the shore’s inclination tells the diver if he is following the

shoreline. Be careful however as underwater ridges may lead you astray.

Surface occasionally to check your position.

• The dip and stratiﬁ cation of rocks on the shore can often be followed over large areas

under water

• Sand ripples usually 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 current