Specifications

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5.8.11 Applicability of the standard mooring layout
In Table 5.8.2 below, it is indicated up to what depth the standard mooring applies. If the local
current strength corresponds to the entry in the first column, then the depth in the second
column in the same row is the maximum depth up to which the standard mooring applies. The
current is assumed to extend over the full depth.
Table 5.8.2. Applicability of the standard mooring layout.
Current speed (m/s) Max. depth
0.7 m buoy
Max. depth
0.9 m buoy
0.5 1050 2000
1.0 180 330
1.5 61 120
2.0 28 62
2.5 19 42
3.0 15 34
Contact Datawell for a fine-tuned mooring advice, if your location is not covered by the table.
Examples:
• If e.g. at the intended location the current speed is 1.5 m/s (3 knots) and the depth is
100 m, then the standard mooring applies for a 0.9 m buoy.
• Should the depth be 150 m, then the mooring must be reconsidered. If the current is
indeed over the full depth, the remedy is a subsurface float (contact Datawell Sales for a
customized mooring design).
• Idem 150 m depth, in case the current is only over the upper half of the depth, the
standard mooring still applies.
5.8.12 Mooring preparation
On your request a tailor-made mooring with appropriate lengths and all terminals attached will
be shipped to you. You only have to provide for an anchor weight.
Connect all cords, ropes and wires according to the standard mooring layout or to the
customized layout included in the shipment. To avoid entangling the mooring line, lay it out on
the deck of the ship with alternate left and right turns. In case of a long mooring line stow the
mooring line as a stack of ‘eights’ (8) with the buoy end up and the anchor end down. To keep
everything in place you may tie a rope through each loop and around the waist. When pulling
rope or wire of the reel do not slide of loops but unroll it. Not only will the line become hard to
handle, it will also build up a torque that may set the buoy spinning and damage the motion
sensor.
In practice, all these actions will be taken when the ship has already left the port.
However, to avoid problems at sea please inspect the mooring once before you actually deploy
the buoy. If this is your first buoy deployment, lay out the mooring on land at ease as an
exercise, study it and pack it into the blue containers again.
5.8.13 Deployment
Once you have set up and checked the equipment on land, it’s time to deploy the buoy. A safe
and successful deployment requires the right equipment and a well-thought out procedure.
Please read the Dangers and warnings and the Mooring preparation sections again for your
own safety and comfort.
Bring a few ropes and a knife, they always come in handy. Also bring a used car-tire to
support the buoy while on deck. Still the buoy must be roped to the railing. You may bring the
RX-D receiver and a receiving antenna to monitor the buoys outputs. Alternatively you can
radio contact your receiving station during deployment. The best time to do this is after the buoy
is deployed on its location and before the ship will return to port. To handle the weight of the