The world’s earliest extant powered submarine, Resurgam was designed by Rev Garrett in 1879 and built by J. T. Cochrane in Birkenhead (where a model can be seen in the docks).
Cynlluniwyd Resurgam, sef llong danfor bweredig gynharaf y byd sydd wedi goroesi, gan y Parch Garrett ym 1879 ac fe’i hadeiladwyd gan J T Cochrane ym Mhenbedw (lle y gellir gweld model yn y dociau).