Were Russian pre-dreadnoughts from the Black Sea and Baltic fleets designed for Pacific operations?
Short answerThey could make the voyage, but effective Pacific service required far more forward repair and supply support than was available.
NotesThe ships were not designed cleanly for any particular ocean. They could undertake an ocean voyage, but could not sustain distant operations comfortably. Repair, resupply, and dry-dock demand followed them throughout the deployment. For the voyage to East Asia, Saigon would have needed facilities approaching Singapore's standard to restore the squadron before further action.