This is what selected sections of the museum site says

RADIO CONTACT
The Dock Office monitors radio channel 68 from 9 a.m. to 7 p.m., July
1 through Labor Day.
PHONE CONTACT
860.572.5391
9 a.m. - 4 p.m. Monday - Friday, year round
9 a.m. - 5 p.m. Daily, July and August

Arrival and Departure

Arrive any time after the 1:40 p.m. Mystic River Bascule Bridge
opening. Please depart prior to 1:40 p.m.

Please check in at the Dock Office after arrival.

The Dock Office is located at the head of the Dunton and Sabino Dock.
Dock attendants are on duty at check-in location 9 a.m. to 7 p.m.,
July 1 through Labor Day.

To Get Here

Use US chart #13214 and pay strict attention to the buoys. The channel
is narrow and twisting; shoals abound just outside the channel.

The Mystic River Railroad Bridge will open on call, unless a train is
expected. The Mystic River Bascule Bridge (Route 1) opens at 20
minutes before each hour from 7:40 a.m. until 6:40 p.m. The Bascule
Bridge opens on call prior to 7:40 a.m. and after 6:40 p.m. Both
bridges monitor radio channels 9 and 13.

Due to an ever-increasing demand for our limited dock space,
reservations cannot be confirmed without a deposit of $100 or one
night’s dockage, whichever is less. Credit card deposits can be taken
by phone at 860-572-5391. Written reservation requests should be
accompanied by a check. Unless a late arrival is prearranged,
reservations are held until the 5:40 p.m. bridge opening

2008 Rates

Mariner Members
$2.75 per foot (LOA) (Includes Museum admission for members' guests
arriving aboard)
Sustaining Members & Higher Categories
$2.75 per foot (LOA) (Includes Museum admission for members' guests
arriving aboard and your second night of 2-night stay is free once per
season.)
Individual, Dual, and Family Members and Non-Members
$3.75 per foot (Includes Museum admission for those aboard)

All levels of Membership receive free dockage October 15 through April
30, except Saturday nights; two (2) nights maximum per visit.

ANCHORING
Please note that there is limited anchorage above the Mystic River
Bascule Bridge. Water outside the channel is very shallow, and Federal
law strictly prohibits anchoring in the channel. Anchoring in the
areas designated for Mystic Seaport exhibit craft is also prohibited.
Boarding exhibit ships or craft is not permitted after hours.

HEADS / SHOWERS
Heads and showers are located at the North Gate. A similar facility,
with a laundry machine, is available at the south end of the property
in the Shipyard area. (Please do not hang laundry on your boat while
at Mystic Seaport.)

The Mystic River is a no discharge zone. Use shoreside toilet
facilities or holding tank aboard. Free pump out facilities for
visiting yachts are located at our pump-out dock in the Shipyard at
the end of the Museum. Contact the Dock Office at 860.572.5391.

FAUCETS / OUTLETS
The wharves are equipped with freshwater faucets and 110-volt AC
electric outlet boxes at convenient locations. A limited number of
220-volt outlets are available.

ICE
If you wish to buy ice, contact a dock attendant or the Dock Office.

RECYCLING
Cans and bottles must be separated from trash and placed in labeled
barrels throughout docking areas.

TELEPHONE NUMBERS
Telephone numbers for such services as taxi, engine repairs and
general local information are available at the Dock Office.