Home Environment Pollution Marine pollution Bay of Plenty Regional Council is working collaboratively to improve and protect the region's marine environment. Oil spills Any spills of oil or fuel from your boat should be dealt with immediately and cleaned up with special sorbent material. Hull cleaning Good hull maintenance is encouraged for all vessels in New Zealand and hauling out is the preferred option. Boat sewage If you need to discharge sewage make sure you are underway, well offshore, in open waters and away from other boats. You may also be interested in Plans Oil spill response