Waterkeeper Flotilla
Leave Nothing In Your Wake
by Sejal Choksi, San Francisco Baykeeper
To patrol the thousands of miles of waterways in the vast and beautiful San Francisco Bay, skippers of San Francisco Baykeeper and its Bay Chapter, Deltakeeper Chapter and Petaluma Riverkeeper Chapter log countless hours in six patrol boats. Like all Waterkeeper programs, Baykeeper walks the talk to reduce the ecological impacts of our own operations. Along with following best practices for refueling and maintenance, Baykeeper has equipped all six of our boats with four-stroke engines.

Four-stroke engines are a little heavier, a little more expensive, and require more maintenance than their two-stroke counterparts, but they are far less polluting. Older style two-stroke models can dump up to 30 percent of their fuel, unburned, into the water. This fuel poisons birds and aquatic wildlife. MTBE, a chemical found in some fuel, is particularly dangerous to drinking water supplies. While new direct fuel injection technology has substantially reduced this problem in some two-stroke models, four-stroke engines emit fewer hydrocarbons, run more quietly, and burn fuel more efficiently. All in all, four stokes are a sound choice for any boater concerned about protecting the environment.

Getting Back in the Water
Run Clean
• Clean your hull on the shore, contain the debris, and dispose of it in the trash.
• Cleaning products that will harm you, will harm the environment – look for alternatives that don’t say “do not get in eyes” or “always wear gloves.”
• Buy only non-toxic and phosphate-free cleaners – look for the Green Seal of approval (www.greenseal.org).

Stow and Dispose
• Use a marine pump out station at the end of each day.
• Never dump untreated sewage into any lake, river
or coastal water.
• Avoid holding tank products that contain quarternary ammonium compounds (QACs) and formaldehyde.
• Stow it, don’t throw it – throwing trash overboard is illegal everywhere.

Watch out for Wildlife
• Proceed slowly in shallow areas and watch your wake – it can disturb or injure wildlife and increases shoreline erosion.
• Avoid contact with submerged aquatic vegetation.
• Prevent the introduction of non-native species by thoroughly cleanly your vessel before traveling a new waterbody.