in order to further reduce the logistical requirements (and construction costs) of the new gunboats, a number of other decisions were taken which seemed almost willfully anachronistic. they had copper sheathing to protect their hulls against fouling in tropical seas. with minimal machinery, old-fashioned human strength on the capstan was required to raise the anchors, and a functional ship's wheel was provided to turn the rudder. all lighting came from candles rather than light bulbs. only one of the four ship's boats was equipped with an engine, the rest being powered by sails and oars. some of the guns were even mounted internally behind gunports.