An item referred to the magazine Mitteilungen a.d.G.d.S. reported that the former British Chief Constructor of the Royal Navy Sir Edward Reed thought it was impossible that larger submarines could be built and that submarines could operate in open sea. Well believed he that it was possible to take small submarines on board of warships. If these submarines could be launched with short time for attack the enemy they could be very useful. However it was a precious armament for a warships if was attacked by the enemy damaging eventually the submarines before they were used. Further more he doubt if there was enough space on board of these submarines for a crew of 4-5 men. Main issue was that these submarines should have a high speed.(1)
Note
1. Sir Edward James Reed (20 September 1830 Sheerness, Kent, England-The Strand, London, England 30 November 1906), Chief Constructor between 1863-1870 and also as a liberal politician member of the House of Commons between 1874-1906. After retiring he still designed warships for instance of Brazil and Chile.