This was accompanied by a diagram showing the following boat flags. Vice Admiral of the Red Plain red flag[279] Rear Admiral of the Red Red flag with a white ball in hoist Vice Admiral of the White Union flag with a white ball in hoist Rear Admiral of the White Union flag with two white balls placed diagonally Vice Admiral of the Blue Blue flag with a white ball in hoist Rear Admiral of the Blue Blue flag with two white balls placed diagonally[280] The need for some distinction in the flags of the admirals of the same squadronal colour, when displayed in a boat, or indeed any small craft in which only one position was available, must, one would suppose, have been felt often before, but this was the first attempt to solve the difficulty. Its main interest lies in the fact that it supplied the solution of the similar difficulty which arose, nearly three hundred years later, when the three-masted sailing-ship had given place to the two-masted iron ship, which often had only a single masthead available for the Admiral's flag. The changes promulgated by the orders of the 5th February and the 20th March, 1702, already quoted, did not end there, for the officers of the fleet were not satisfied with an arrangement that made over the Union flag to the admirals of the second squadron of the fleet and introduced a red and white ensign. Accordingly, on the 6th of May, Pembroke issued the following further order: Whereas I did some time since direct in what manner the Flaggs and Ensignes should be made for such ships as should be appointed to be of the Squadron of the Adm^l of the White, and whereas upon consulting with the Flagg Officers of the Fleet, it is thought more advisable that the said Flaggs and Ensignes should be rather made white with a large St George's Cross, according to the sample herewith sent you: and I do therefore hereby desire and direct you, to cause all such of the said Flaggs and Ensignes as have already been made by your orders to be altered, and that such as are still to be made be conformable to what is before directed, as also the Flaggs necessary for the Boats of the Ships of the aforesaid Squadron[281]. The drawing included with the order shows a very broad red cross, in width equal to one-third of the depth of the whole flag[282]. This alteration necessitated a change in the boat flags of the Vice- and Rear-Admirals of the White. The balls became blue and were gathered into the upper canton instead of being placed diagonally across the flag; the white balls in the red and blue flags also underwent the same alteration in position.