[ Problem Point ]
When waste oil is spilled carelessly, it’s necessary to violate “MARPOL Convention” and “Law concerning the prevention of the reaching marine disaster like seawater pollution etc.”
and to pay a high penalty.
[ ⇒Kaizen Point ]
Started using the DLC-100B Bell type.
So loud 80 horn Bell Type.
When oil became near fill up the drum,
Can be alert to the staff on deck.
Related page:
Drum Level Communicator products 
No.1 Transfer of drain 
No.6 Refill of waste paint 
No.7 Supplement of hydraulic operating fluid 
No.8 Centralized storage of Specified Chemical Substance 
No.9 Automatically Changeover of Drums 
No.13 Repacking of waste oil 
No.14 Residual quantity shortage warning of hydraulic fluid