 This proved to be impossible as the over-ambitious high-speed requirement demanded use of the same troublesome high-pressure boilers that were being installed in the Type 1934 destroyers.The maintenance problems with the boilers were exacerbated by the lack of access to the machinery allowed by the restricted spaces of the lightly-built and narrow hull.The naval historian M. J. Whitley deemed "the whole concept, with the benefit of hindsight, must be considered a gross waste of men and materials, for these torpedo boats were rarely employed in their designed role."