AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/boat-no-discharge-zone-secure

In a No Discharge Zone, what must you do with your boat's flow-through toilet system?

Start playing free

  1. Use it only at night
  2. Secure it so it can't discharge, like padlocking the valve
  3. Add extra chemicals and keep using it

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Boater Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. A Boater's Guide to the Federal Requirements for Recreational Boats (USCG) www.uscgboating.org/assets/1/AssetManager/Boaters-Guide-to-Federal-Requirements-for-Receational-Boats-20231108.pdf Checked 2026-10-09.
  2. 33 CFR 159.7, Requirements for vessel operators www.ecfr.gov/current/title-33/section-159.7 Checked 2026-10-09.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Boating & WaterOn a boat with a toilet, which kind of marine sanitation device is a holding tank?Boating & WaterTo stop the spread of aquatic invasive species, what should you do when moving your boat to another lake?Boating & WaterWhere is it legal to throw plastic trash overboard from a boat?

That's stuff everyone should know.