Buoy Ballast Weights
The table below indicates the minimum recommended ballast weight for each CB-Series data buoy,
assuming no additional topside weight and calm environmental conditions. Included instrument cages
mounted to the buoy frame helps stabilize the buoy and provides a deeper location for mounting
additional weight. The small model instrument cage (10 lbs.) is included with the purchase of CB-150,
CB-250, & CB-450 buoy models and is an optional purchase for the CB-50. The large model instrument
cage (26 lbs.) is included with the purchase of CB-650, CB-950, & CB-1250 buoy models. Typically, no
additional ballast weight is necessary for the CB-25-SVS, CB-25, & CB-40 models as each buoy comes
standard with either 1/2″ galvanized chain (CB-25 & CB-25-SVS) or an installed steel instrument pipe
(CB-40) for ballast.
Model
Buoyancy (lbs.)
Minimum Recommended
Ballast Weight (lbs.)
1
CB-25-SVS
25
—
CB-25
25
—
CB-40
40
—
CB-50
50
—
CB-150
150
—
CB-250
250
—
CB-450
450
—
CB-650
650
50
CB-950
950
100
CB-1250
1250
150
1
Minimum recommended ballast weight incorporates the weight of the included or optionally purchased
.
Important: To effectively provide adequate ballast weight, a variety of application-specific criteria
(sensor weight and positioning, water level fluctuations, wave and current action, external loading, etc.)
must be thoroughly reviewed prior to deployment. NexSens does not endorse using these specific
ballast weights for all applications.
For more information regarding buoy ballast weight and stability, please refer to the following article:
CB-Series Data Buoy Ballast Weight & Stability
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