under way

prepositional phrase3

1. •
   In operation, in progress, commenced.

   • A dearth of signalmen and the high cost of labour is hastening an elimination process that already was well under way before the second world war. — 1956
2. •
   Into motion, into its course.

   • The show finally got under way, just 10 minutes late.
3. •
   Moving through the water; not anchored, moored, aground, or beached.