Byzantine Blackwood convention Byzantine Blackwood convention Byzantine Blackwood is a bidding in the game of bridge. Devised by Jack Marx, it is a complex version of the (by which a four notrump (4NT) asks about 's holdings). Its premise is that both aces and kings may safely be shown in response to a Blackwood-type 4NT enquiry; provided that such kings are in well-defined "key" or "half-key" suits, there being no more than two such suits. The name was chosen to express the idea that Byzantine Blackwood is a development from Roman Blackwood, by analogy with the Byzantine Empire and the Roman Empire; rather
HMS Blackwood (F78) HMS Blackwood (F78) HMS "Blackwood" was the name ship of her class (also known as the Type 14-class frigate) of second-rate anti-submarine frigates built for the Royal Navy in the 1950s. The "Blackwood" class displaced at standard load and at deep load. They had an overall length of , a beam of and a draught of . The ships were powered by one English Electric geared steam turbine that drove the single propeller shaft, using steam provided by two Babcock & Wilcox boilers. The turbine developed a total of and gave a maximum speed of . The "Blackwood"s had a