you are correct about the word but wrong about lyotchik in russia civil pilots a called pil t and military pilots are called ly tchik it is a military profession not a rank same as pilot not a rank in any military word sold t means soldier and used same way as in english word mory k in russian comes from word mory meaning sea so in general speech it coul be translated as a seaman even some online translaters do that or as a sailor but in military ranks important is the equevalency not the translation and the equivalent to u s rank of seeman would be russian rank of matros while moryak is general term which could applied to anybody who seves in navy or in a civil fleet