The sentence is from the book "De antiquitate regum Norwagiensium", and was written by Theodoricus Monachus.
Ibi tunc quidam dicunt regem scapha evasisse et ob salutem animae suae exteras regiones adisse, quidam vero loricatum in mare corruisse.
Thoughts: I understand that the noun "regem" is the subject for the verb "evasisse". I am also certain that the verb "adisse" is referring back to "regem". I am, however, curious whether "regem" is the implicit subject for "adisse".