...blaring? ... Why would the rescuers need to hear anyone shouting for help ? They'll have been given the location already. And their boats are all fitted with searchlights. They're not simply cruising around, sirens blazing, on the off-chance of finding someone crying for help. And in any case, what about the sound of the boat's engine ? Or are you suggesting they should maybe...

... combination of tides, wind and wash - from everything from fast craft to cruise ships - explains why piers on the tidal Thames have to be substantial pieces of civil engineering - costing more than £1m a....net> writes I'm told that the tidal nature of the Thames has an adverse impact on the cost of running the services, although ...