three distinct strokes of the bell before and after rapid ringing of the bell for 5 seconds also can sound "U"
audible and visual alarm,one when the water level above the inner bottom in any hold reaches height of 0.5 m and another at a height not less than 15% of the depth of hold but not more than 2 m.
No,List of medicine required is not same for all ship. As per ship's captain medical guide, the list of medicine varies for
1.Forein Going Merchant Vessel
2.Coastal Vessel
.Fishing vessel or personal craft
4. If a doctor available on board