They have significantly improved the effectiveness of existing seabed penetrometers, small devices dropped from ships that measure the seabed strength.
(ships; measure; the seabed strength) (small devices; dropped; from ships) Context(small devices dropped,List([85, 106))):(They; have significantly improved; the effectiveness of existing seabed penetrometers)
small devices dropped,List([85, 106))
ships small devices They
measure dropped have significantly improved
the seabed strength
from ships
the effectiveness of existing seabed penetrometers