swallow float

swallow float

[′swä·lō ‚flōt]
(engineering)
A tubular buoy used to measure current velocities; it can be adjusted to be neutrally buoyant and to drift at a selected density level while being tracked by shipboard listening devices. Also known as neutrally buoyant float; swallow buoy.
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WHOI has played a major role in the evolution of drifting sensors from Swallow floats through SOFAR and RAFOS drifters to today's rapidly improving family of profilers (ALACE, PALACE, SLOCUM--see Oceanus Fall/Winter 1996 for an article on these instruments).
WHOI and access to the sea

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