Oil-to-sea interfaces include any equipment onboard a ship where seals or surfaces may release oil and are submerged in water. The VGP specifically identifies several types of equipment that can generate lubrication releases from an oil-sea interface, including:
- Controllable Pitch Propeller,
- Thrusters,
- Paddle Wheel Propulsion,
- Stern Tubes,
- Thruster Bearings,
- Stabilizers,
- Rudder Bearings,
- Azimuth Thrusters,
- Propulsion Pod Lubrication,
- Wire Rope.