basically, they are just water jugs filled with water.
they are similar to those malay traditional drums (kompangs)
except, ocean drums have sticks for you to hit on.
and it produces some water-like sounds.
following would be...
a brake drum. :D
the brake drum isn't really a drum.
it is a part of a vehicle's (car/bus/lorry etc.) wheel.
it produces a steel like sound, like those when you hit a pan.
also, we have the...
ship bell. :D
it's like a regular bell which you can find on ships.
commonly placed outside long john silver.
and also at our obs campsite 2.
usually rang as a sign of warning.
now,now, don't you tell me that you have no clue what the 'instruments' are like.
cause i'll just chop off your heads.
unless, of course, the informations that i've given are wrong.
which i hope is.
cause i can't imagine performing with water jugs and wheels.
but come to think of it, it's kinda cool.
we still have end of year to prepare, so cheer up!
