You have done well in handling the situation. Let me share below preparation for a normal seafarer in the Philippines for the same situation;
1. Learn and train in school
2. After graduation in school, train and be certified in a training center
3. Familiarization upon joining the company
4. Familiarization upon joining the ship
5. Hand-over from the seafarer to be relieved
6. Monthly drills

The point is, with all the above listed preparation, we still have incidents onboard ships.

With my experience of zero accidents, type of leadership matters!

Well done!