This paper describes a method for the analysis and simulation of electromagnetic transients in underground power transmission and submarine cables. This method uses the frequency domain technique known as the numerical Laplace transform [Int. J. Electl Engng Educ., 15 (1978) 247]. This method can be used, as a principal analysis tool or as a backup for time domain tools such as the EMTP [Electromagnetic Transients Program Reference Manual, Portland, OR, USA (1986)]. Two application cases taken from specialized literature included here, are taken from Wedepohl and Wilcox [Proc. IEE, 120 (1973) 253] and L. Marti [IEEE Trans. Power Del., 3 (1988) 1099], respectively.