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VideoRay Explorer
7.3 AVOIDING TANGLES
As mentioned above, it is always a good idea to consider where the tether lies as VideoRay
moves through the water or along the bottom. The following tips may assist in dealing
with and / or avoiding tether problems:
1) Don't feed out unnecessary tether. When flying VideoRay back along its tether, haul
in the slack line to avoid leaving a loop behind the vehicle.
2) Avoid weaving in and around fixed objects like pilings, rocks, and anchors. When
operating in possibly fouled areas, it is advisable to remain on the surface until
VideoRay is approximately above your intended dive objective.
7.4 FREEING A SNAGGED TETHER
1) Do not try to rip a snagged tether free! In the event VideoRay's tether becomes
snagged, treat the situation as a challenge rather than a disaster. Fly the VideoRay
along the tether to determine the location of the snag. If the problem area can be
located visually using the vehicle, appropriate corrective action can be taken.
2) If the problem area cannot be located using VideoRay's camera, try pulling gently on
the tether. Turn the vehicle power off and pull from different angles and directions if
possible.
3) In the event the tether cannot be otherwise freed, it may be necessary to have a diver
retrieve it manually. In that event, turn off the system power and unplug it from its
power source.
7.5 BALLAST SETUP
VideoRay is configured at the factory to be neutrally buoyant in fresh water. Depending
upon the water conditions, including salinity or other factors, the VideoRay ballast might
need to be adjusted for proper operation. Ballast is adjusted by adding or removing
weights from the ballast retaining system located under the ROV between the skids.
These weights are included with your VideoRay.
The ballast should be adjusted so a submerged VideoRay ROV floats upward slightly
(positive buoyancy). Should the VideoRay rise rapidly, or the vertical thruster create a
fountain spray of water when near the surface, more ballast must be added. Should the
VideoRay sink, some ballast must be removed. Salt water density is greater than that of
fresh water. Additional ballast must be added to the VideoRay ROV when using it in salt
water.
August, 2014
http://www.videoray.com
19
Version 1.0, Rev. C
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