When did these incidents happen? I lived on the Cape in the late 70's
so I may be transferring the memory back to that association. When
did they start installing GPS on big ships?

--

Roger Long



"Rodney Myrvaagnes" wrote in message
...
On Sun, 16 Jan 2005 23:17:11 GMT, "Roger Long"
wrote:

That rings a bell and I think you might be right. The shoal being
shallower than charted may have been a secondary factor.

I don't think it would have been GPS in those days. Probably Loran.


Can't tell what you are talking about. Both the QE2 and Nantucket
shoals incident are quite recent. The QE2 was a chart problem, since
corrected, and had nothing to do with autopilot or any other
automated
gear.

The Nantucket shoals incident was from a system that ran on DR for
600+ miles with the GPS disconnected.



Rodney Myrvaagnes NYC
J36 Gjo/a


Capsizing under chute, and having the chute rise and fill without
tangling, all while Mark and Sally are still behind you

Roger Long wrote:
When did these incidents happen? I lived on the Cape in the late 70's
so I may be transferring the memory back to that association. When
did they start installing GPS on big ships?


As systems developed they were installed on ships. "Sat Nav" in the
70's, "GPS" in the 80's.
Nowadays you are seeing a greater usage of integrated systems (GPS,
radar, chart plotter, AIS, Doppler).
The biggest problem (aside from the mistaken total reliance) is that the
chart display and GPS don't always match exactly.
BTW, squat has been known about for many, many years .... it just hasn't
been given as much attention as it needed by those in "open water"
conditions. Since the QE2 incident you see far more ships with "squat
tables".

otn

On Mon, 17 Jan 2005 10:59:01 GMT, "Roger Long"
wrote:

When did these incidents happen? I lived on the Cape in the late 70's
so I may be transferring the memory back to that association. When
did they start installing GPS on big ships?


Much more recent. The NTSB hearings report from the Nantucket Shoals
grounding just appeared in Professional Mariner last fall.

The QE2 grounding was in the early 90s, and the course was agreed on
by the skipper and the pilot. If the chart had been correct, squat
would not have made the ship hit anything. With the actual reef that
was(is) there, the ship would have hit no matter how slowly it was
moving.

It was an incomplete survey, pure and simple.



Rodney Myrvaagnes NYC J36 Gjo/a


"Be careful. The toe you stepped on yesterday may be connected to the ass you have to kiss today." --Former mayor Ciancia

On Mon, 17 Jan 2005 18:06:21 -0500, Rodney Myrvaagnes
wrote:

It was an incomplete survey, pure and simple.

====================================

And it happened right down the road, so to speak, from the Woods Hole
Oceanographic Institute. Fortunately I've never ownned a boat that
draws as much as the QE2, otherwise I would have surely left my mark
in many more places.