Four years after his first journey to England, one of those naval enquiries already alluded to was held at Berlin, and a commission was appointed to advise as to the types of vessels to be chosen for the fleet which the Prussian Government contemplated building at some indefinite future date. Prince Adalbert was a member of this body, but when asked for his views on the subject he satisfied himself with laying before his colleagues the opinion of his friend, Captain Mingaye, a British naval officer, who advised that the triumph of steam over sails and oars presented Prussia with a splendid opportunity to create sea-power which should be "mighty" from the outset. Curiously enough, the War Minister, von Rauch, inferred from this suggestion that naval construction was passing through a transition stage of doubtful issue, and it was used by him as a pretext for postponing the consideration of the whole question; for, he argued, Prussia could not afford to squander money on uncertain experiments. In the succeeding years, the Prince cruised the Mediterranean in an Austrian ship with his friend the Archduke Johann, afterwards the Imperial Administrator, and made in Sardinian and British war vessels several longer voyages, during which he devoted himself with a whole heart to the study of seamanship and navigation. He also added materially to his knowledge while on board one of the ships of the British Mediterranean Squadron, which at the time was engaged in manoeuvres. On his return home from these experiences, he secured the appointment of Schröder to the Navigation School ship _Amazon_, always with the idea that the vessel would be the training-ground of the officers' corps of a future Prussian Navy. As we have seen, the Prince was chosen as chairman of the Frankfort advisory committee on naval questions. Some months previously he had addressed to the National Assembly a "Memorandum as to the Formation of a German Fleet." This document, which was printed and published, not only is a remarkable testimony to the author's insight into the true nature of naval problems, but also contains a clear enunciation of the principles which have since guided Germany's naval policy. Pointing to the humiliation of the Danish blockade he wrote: