You can go and have a look, doesn't mean to say you have to rescue the buggers.
1982 UNCLOS
11 RULES ON ASSISTANCE
Duty to render assistance
Under article 98 of UNCLOS, every State must require the master of a ship flying its flag,
in so far as he can do so without danger to the ship, the crew, or the passengers, to:
- render assistance to any person found at sea in danger of being lost (paragraph 1(a));
- proceed to the rescue of persons in distress, when necessary (paragraph 1(b)); and
- after a collision, render assistance to the other ship, its crew and its passengers
(paragraph 1(c)).
The obligations to render assistance and to proceed to the rescue of persons in distress is
contained in two IMO treaty instruments. SOLAS stipulates the general obligation of the master of
a ship to proceed, where necessary, with all speed to the assistance of a ship, aircraft, or survival
craft in distress (regulation V/10, renumbered as V/33 in the amendments adopted in 2000).
Yes you do or you will be in contravention of International Law and most likely your own Flag Nations laws.