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2.2 Inspection
2.2.1 Mooring
Bent terminals in the mooring line may indicate extreme forces. Verify with Datawell whether
your mooring is suitable for your local conditions before you redeploy the buoy at the same
location. Inspection of the rubber cords and the polypropylene line may show signs of wear.
Make use of these early warning signals and think what may be the cause (e.g. rocky bottom)
before you redeploy. In section 5.8 on the mooring you will find further suggestions.
2.2.2 Corrosion
Even when the sacrificial anodes will largely protect your buoy from corrosion, it is a good
habit to inspect the buoy for corrosion upon recovery. In particular you should check below the
fender.
2.2.3 Marine growth
Although the buoy will continue to function normally, the growth of seaweed will increase the
drag forces on the buoy and mooring however will not affect the precision of the wave
measurement. Furthermore the mooring line may weaken from small incisions due to sharp
barnacles. Clear the hull and terminals and inspect both hull and mooring when the buoy is on
deck or on land. In case of extensive marine growth a Cunifer10 (copper-nickel-alloy) hull is
advisable.
For buoys equipped with a temperature sensor, it is important that the mooring eye is free
of marine growth. This will result in an optimal response of the temperature sensor. Marine
growth can be removed by a standard pressure washer (150 bar).
2.2.4 Marine growth on solar panel
In case the buoy is equipped with a solar panel marine growth can be removed by means of a
standard pressure washer (150 bar). this will not damage the panel neither by scratching the
polycarbonate surface, nor by affecting the lute between the panel and the stainless steel
hatchcover.
In case the solar panel has become scratched by other causes they can be removed.
Please contact Datawell for advice.
2.2.5 Opening the buoy and sealing rings
Before you open the hatchcover or any of the option inserts, rinse with fresh water to avoid
migration of salt and dirt into screw holes, sealing ring grooves or the buoy interior.
Remove dirt from the circular grooves of the hull flange and option ports and inspect the
rubber sealing rings for cuts. Clean grooves and intact sealing rings are essential for water
tightness.
To open the hatchcover refer to subsection 5.3.5.
2.2.6 HF/LED antenna whip
A correctly functioning HF/LED antenna is of utmost importance both for retrieving wave data
in real-time and for safe marine traffic. Ship collisions and recovery operations may damage the
antenna. Special attention should be paid to cracks in the whip antenna and transparency of the
LED lenses.
2.2.7 GPS/Iridium antenna
Dirt on the GPS or Iridium antenna may block the signal. When dirty, clean the antenna with
water, soap and a soft piece of cloth.
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