Is there information which indicates vessel-specific information for
cruise ships (in respect to environmental technologies installed to
ensure an environmentally friendly guilt free cruise vacation for the
cruise consumer)?

For example, I'm seeking information which can tell me which fuel a
ship purchases (high grade vs. cheap bunker oil), what type of Marine
Sanitation Device is installed (old inadequate holding tank type or
new wastewater treatment technology), what a ship's effluent sampling
record is, does it treat or simply dump overboard its greywater, what
is done with its
hazardous waste, does it use percs in its dry cleaning, is there
adequate training and staffing to run a clean ship, etc.

Some sites like cruisejunkie.com list ship-specific incidents, disease
outbreaks and felony fines. But it has little on individual vessel
environmental performance auditing.

Perhaps LLoyd's , a ship insurer or the Coast Guard has such a public
site for meaningful third-party, verifiable corporate environmental
reporting?

We were on a cruise in May 2002 aboard the Ocean Princess and at each
turn-around port there was a greywater/blackwater tug that received
the ships goodies(sic).

When you have a time table, 2000 to 5000 passengers, I personally
would go cheap on fuel... Would you?

Besides there should be minimal road-users taxes, right? hehe