MELBOURNE, Australia — An Australian warship on Monday rescued a Lithuanian solo rower who had encountered a tropical cyclone while attempting to cross the Pacific Ocean from California.

Aurimas Mockus was taken aboard Royal Australian Navy landing ship HMAS Choules, where he was undergoing a medical assessment, Vice Adm. Justin Jones said in a statement.

“Because of highly unfavorable sea conditions, Mr. Mockus’s boat could not be recovered except for two oars and some personal…