wrote in message
oups.com...

(!) He
looked really puzzled after he asked whether we had our sanitation Y
valve wired shut and I told him "no". I let him stew for a few seconds
before telling him we have an approved Type I MSD.

Whenever a vessel equipped with a Type I or Type II MSD (these types
discharge treated sewage) is operating in an area of water that has been
declared a No Discharge Zone, the MSD cannot be used and must be secured to
prevent discharge.When operating in a No Discharge Zone, a Type I or Type II
MSD must be secured in some way to prevent discharge. Closing the seacock
and padlocking, using a non-releasable wire-tie, or removing the seacock
handle would be sufficient.


http://www.boatsafe.com/nauticalknow...ting/4_2_f.htm

Chuck,
If you have a Type I or Type II MSD, the MSD must be secured with a seacock
and padlocking or wire-tie.


From the definitions that I've read, it appears that I have a Type III
MSD...and only the Type III MSD doesn't need to be padlocked or wired shut.
Your Type I MSD *does* need to be secured according to the description that
I posted above.