to set off /sɛt ɔf/ /sɛt ɒf/
to set out /sɛt aʊt/ /sɛt aʊt/
to embark /ɪmˈbɑːrk/ /ɪmˈbɑːk/
to depart /dɪˈpɑrt/ /dɪˈpɑːt/