It has more to do with boats or ships. OED has
a. An exclamation to attract attention.
b. After the name of a thing or place to which attention is called: used by boatmen, etc., to call attention to the place for which they are starting; hence, generally, with a sense of destination.
1593 G. Peele Famous Chron. King Edward the First sig. Kv, [stage direct.] Make a noise, Westward how. Queene. ‘Woman what noise is this I hear?’ Potters wife. ‘It is the Watermen that cals for passengers to goe Westward now.’
a1616 Shakespeare Twelfth Night (1623) iii. i. 133 Then Westward-hoe: Grace and good disposition attend your Ladyship.
Charles Kingsley wrote a novel Westward Ho! in 1855, which was rather popular and spawned a tourist boom to North Devon. So much so that a new village was built by entrepreneurs to service the visitors, which was called Westward Ho!, complete with the exclamation mark. Even though your article was written in 1934, it's possible that the popularity of the previous eighty years hadn't entirely worn off and was still influencing the translator.