EPSONDE is a tethered free-fall profiling system used to obtain temperature microstructure and velocity turbulence data to a depth of at least 1500 m. EPSONDE, which carries a variety of slow and fast sensors, is deployed on a loose kevlar multiconductor cable by a specialized wire-handling system. Data are transmitted from this underwater unit (1792 samples per second) to a shipboard system which includes a dedicated microcomputer for data logging and on-line data processing. The performance of this system will be demonstrated by discussing a study of turbulent mixing processes in a lens of Mediterranean water (a MEDDY) found at a depth of lo00 m in the Canary basin. These studies indicate that turbulent kinetic energy dissipation may be an important mechanism in determining the decay and lifetime of a MEDDY.

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A three-degree-of-freedom nonlinear dynamic model of highline system for underway replenishment at sea was investigated, which considered the influence of the inclined angle. The cases with lumped mass swing are numerical analysed by Mathematica program, which considered one to two internal resonance and dominate external resonance. The result showed that the oscillation amplitude of the highline system would decrease with the inclined angle decreasing.

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