On today's Ship Report, Joanne Rideout talks
about an engineering concept called the "six
degrees of freedom," which describes the myriad
ways ships can bounce and roll around at sea.
It's more freedom than anyone really wants, and
marine designers are doing their best to control
The AMVER system is a voluntary
alliance between commercial vessels and the
USCG to help in rescues. Image courtesy
Tide times are
often listed in 24 hour time - for
times after , subtract 1200 from the
time to get regular clock time. Ex:
1300 hrs - 1200 = 1:00 pm)
Also, tides are referenced
to Mean Lower Low Water, a reference
point for depth on many nautical
charts. MLLW is the average of the
lower of the two low tides in a day,
over a 19-year cycle.Minus
tides are lower than MLLW.
If you're right on the coast,
subtract an hour from these times.
Upriver, highs and lows happen later.
For instance, in Knappa, add an hour.
In Clatskanie, add 2 hours and 15
blast every two minutes or less: vessel operating
consecutive horn blasts:
warning signal that means literally
"I do not know your intention." This
generally means another vessel is in the way of a ship
in the channel, and is being asked
to move before they collide.
short blasts: Vessel going
long blast followed by three
short: signal for the change of
pilots. Soon after this signal,
you'll see the pilot launch
Arrow II head out to a passing
ship, to facilitate the transfer
of bar and river pilots.
"Pilot transfer" is when a pilot
disembarks or boards a ship. Ships
generally must by law have a river or
bar pilot on board when they are on
the Columbia or Willamette Rivers. The
bar and river pilots have separate
pilotage grounds defined by the Oregon
operated by Columbia
She spent several
months in Astoria in
the fall of both
2008 and 2009,
at the Port of
Astoria. In early
December, she headed
to the shipyard
in Portland for some
She headed back out
to sea in early
Podcasts This Week
This week we start with a look at a
container ship accident in Italy:
A containership accident in Italy left seven
dead as a ship leaving the dock lost
control, demolishing a control tower
complex. Today we talk about mass and
momentum and why staying out of a moving
ship's way is a good idea.
The tall ships Lady Washington and Hawaiian
Chieftain will be touring Columbia River
ports beginning this week.
Today we talk about the largest cruise ship
in the world, and how it compares to ships
we see on the Columbia.
Our topic today is AMVER, the
Automated Mutual Assistance Vessel Rescue
system. Its members are commercial vessels
who have volunteered to help save lives.
Today we talk about an
engineering concept called the "six degrees
of freedom," which describes the myriad ways
ships can bounce and roll around at sea.
It's more freedom than anyone really wants,
and marine designers are doing their best to
connect to Ship Report Archives for this
Guide - A handy foldout guide that will
teach you how to identify the ships you see.
Fisher Poets CD -
Recorded live in 2006 at the 11th Annual
Fisher Poets Gathering in Astoria, Ore. Sales benefit
Coast Community Radio in Astoria.
Joanne Rideout inside
is a daily podcast about
ship traffic from around
the world, along with
recorded interviews with
mariners and other
nautical folk about issues
piracy to life
Producer Joanne Rideout is a journalist and
photographer who created The Ship Report in
2005. Since then Joanne and has been
interviewing, writing and photographing the
maritime world and its interesting people
as much as she possibly can.