Abstract
The prototype MIT vibrating string accelerometer (VSA) gravimeter system was used by the Woods Hole Oceanographic Institution during three cruises of the R.V. Chain in 1967. This meter was operated simultaneously with a gimbal-mounted LaCoste and Romberg sea gravity meter (S-13) for a total of 14 weeks. The port-to-port drift observations appear to be less reliable than the drift rate determined from a comparison of free-air anomalies calculated independently for the two meters. The drift-corrected free-air anomaly values at crossings of ship tracks are compared. The mean difference of the six crossings with the S-13 meter is 11.6 mgal with a standard deviation of 8.7 mgal. For the seven crossings using only the VSA meter, the mean is 1.6 mgal with a standard deviation of 0.8 mgal.
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