Noonsite.com contains this
passage...
"All yachts should be fitted with either holding
tanks to contain sewage for discharge in waters outside the outer reef edge or have U.S. Coast Guard-approved
marine sanitation devices aboard. However, wherever possible, onshore sanitation facilities should be utilized. The discharge
overboard of sewage, or any other pollutant within the 12 mile
Bermuda Territorial Limit, is an offence, and offenders will be prosecuted."
Consider a camping style chemical
toilet for your time in Bermuda. Or, you could possibly install one of the new composting toilets.