This is from Operating Lifeboats by Capt Gibson - it on the internets
The risks associated with launching, running, and recovering a modern ship’s lifeboat are well documented. Although the design and manufacture of the lifeboat and its ancillary equipment has evolved to meet the minimum requirements of international conventions, many mariners have been killed or injured in accidents during the operation of these lifesaving appliances,
His point that he makes in the article is the reason mariners know how poorly suited conventional ship’s lifeboats are is not because we know how many mariners have killed or injured but from observation during drill how poorly they are designed and how poorly they function.
more from the same artilce
It is probable that few bureaucrats, even those involved in the development of regulations applicable to lifeboat safety, have ever descended a ship’s side at night n a near gale, totally dependent on the ability of the boat’s crew to release the hooks at just the appropriate moment. It i open to debate whether the designers of modern lifeboat equipment understand what a bowman experiences while trying to grasp a swinging steel block from the small hatch of a pitching boat. In either case, untimely concerns about the status of the on-load release gear may cause a dangerous distraction at a critical moment.