Complex sentence: More significantly, it involved the development of buoys tested and weighted to exactly replicate the drift characteristics of non-swimming divers on the surface of the ocean, and the use of timed and measured vessel manoeuvres.
Split into simpler sentences: More significantly, it involved the development of buoys tested and weighted to exactly replicate the drift characteristics of non-swimming divers on the surface of the ocean. The technique also calls upon the use of timed and measured vessel manoeuvres.