The Tremendous was 170 feet on the gun-deck, while the biggest class of two-decker, built in the 1850s, was 250 feet.
Ikakhulu yayilingana nekhulu elinamashumi asixhenxe enyawo kumgangatho wompu, ngelixesha ezinkulu ezikwindawo ezininzi zomgangatho emibini, eyakhiwa ngonyaka wewaka linamakhulu asibhozo anamashumi amahlanu, yayikwa namakhulu amabini anamashumi amahlanu.