During sea days my request for a
time on the bridge was answered with printed invitations both to the Bridge and to
the Engine Control Room. Fifteen years ago, such tours were offered to all passengers and announced like to the shows or bingo. But now, maybe due to terrorism, only those who request same are invited
and one must bring one's room key and a photo ID. And only about 25 of the 2300
passengers came.
Most if not all of the officers of
both the mechanical and navigation staffs have Greek surnames and were educated
in Greek maritime colleges. They are quite fluent in English and pleasant and
polite, but they speak with strong Greek accents. My father spoke with a German
accent so I am used to such, but with advancing age and consequent hearing loss
it becomes more difficult for me to understand accents.
The primary source of power for
the ship and it's huge propellers are gas turbines which generate electricity.
The heat generated by the gas is trapped and used to make steam used to create
even more electricity. Everything is duplicated so that the energy from either
of two engine rooms, each containing two engines can be directed via electrical
cables (rather than huge propeller shafts) to either of the two propellers or
to both. So if either part of the power system fails, it's sister can still
power the ship-- to 17 knots but not to the max speed of 25. If an engine fails,
the restart procedure takes only two minutes -- a tiny fraction of the time it
took to restart Hammerburg's steam boilers!
Constellation also has two huge reverse
osmosis water making machines to supply the food, drinking and
washing needs of its huge complement of passengers and crew.
All waste water from the engines,
from showers, sinks and laundry and from the ship's heads is piped to a central
tank and treated by microbes and UV light before being discharged -- as clean
enough to drink! A bit stronger and more
successful sewage treatment than ILENE's former Lectrasan machines. The
alternative is to keep this water in holding tanks and pump it out in port but
this alternative comes with a big sewage fee.
No rudder!!! Yes, because the huge propellers can be rotated on a vertical shaft -- like the out board motor on a dinghy! These propellers do not have a reverse gear.
To achieve reverse, you turn the propellers around. They spin in the same
direction as before, but now instead of pushing the boat forward their pushing
power is directed to pull it aft. And no need for stern thrusters, like the three eight foot diameter ones in the bow; just rotate the ships propellers to thrust to the side. The boat also has two large (retractable so
that she can pull up to a dock in port) stabilizer fins that stick out about 22
feet on each side to reduce rolling.
The bridge is forward on the ninth
deck, below the gym and the cocktail lounge on decks ten and eleven. It is enclosed and extends several feet outboard from
both the sides of the ship giving the officer in command visibility of the
sides of the ship from stem to stern.
I asked whether they controlled degree if heel in turns like the sharp ones in the island archipelago on the way to and from Stockholm and the Lieutenant did not really give an answer. Ilene's arms are folded.
On port wing of bridge |
The Captain also gave a talk in
the theater
about the construction of such boats (modular -- like the huge
military vessels we saw being built in Bath ME) and navigation.
Part of theater, sorry about fuzzy shot. |
He is an extremely witty and charming man and answered all questions. The short answer is that there is a bridge between Denmark and Sweden under which Constellation cannot pass, necessitating the long route. She has a 45 degree righting angle despite only 25 feet of draft and an eleven story freeboard, but he never exceeds five degrees of heeling and despite sharp turns --sharp for a boat this size -- in the archipelago of islands outside Stockholm, we did not exceed three.
One passenger asked if he could bring his family along: "I could but I don't have one." How about a girlfiend? "I could but I don't have one." How about a boyfriend? "I could, but I don't want one."
Tight turns |
One passenger asked if he could bring his family along: "I could but I don't have one." How about a girlfiend? "I could but I don't have one." How about a boyfriend? "I could, but I don't want one."
Our cabin, looking inboard; next is outboard. |
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