Technique for avoiding collision with floating debris......
 

How about:
"The Marine Committee of the NZ Insurance Council (http://www.icnz.org.nz) has been
researching issues surrounding the dangers of lost shipping containers in New Zealand
waters, particularly to smaller craft and modern fast passenger ferries. It is known that
a significant number of lost containers in New Zealand waters are not reported. Some
containers remain afloat, often below the surface, long enough to be a real hazard to
shipping."

http://www.veromarine.co.nz/dirvz/ma...otoFeature0007


wrote in message
...
On Fri, 21 Nov 2003 17:23:41 -0800, Josh Assing wrote:

while sailing. Stuff like containers that fell off of freighters will show up on
RADAR. No matter what, there is never any substitute for paying attention. I


not if they're submerged just below the surface....


Please speak in complete thoughts, and maybe even cite real life examples to
support your claim that this could even happen.

Thank you
BB

Technique for avoiding collision with floating debris......
 

The waters cited are not prone to large swells, but I have been in a water
taxi late at night and seen the radar pick out logs and other debris on the
water. It was overcast, poor visibility and moderately high wind at the
time.

Unfortunately, did not note manufacturer of unit.

surfnturf

"Doug Dotson" wrote in message
...
Maybe on a dead calm sea.

"Tom Dacon" wrote in message
...


The stuff is so low in the water that it can't be picked up by radar.
A
debris object would have to be nearly as large as your boat to set off
any
radar collision alarm..


This hasn't been my experience. In calm inner waters, such as the inland
passage along the west coast of Canada, radar when set to short range
can
commonly pick up a log or the top of a deadhead if it breaks the water's
surface, and it will routinely pick up a seagull standing on top of it.
In
fact, I've even seen it pick up the riffles from a tidal rip.

Tom Dacon

Technique for avoiding collision with floating debris......
 

The waters cited are not prone to large swells, but I have been in a water
taxi late at night and seen the radar pick out logs and other debris on the
water. It was overcast, poor visibility and moderately high wind at the
time.

Unfortunately, did not note manufacturer of unit.

surfnturf

"Doug Dotson" wrote in message
...
Maybe on a dead calm sea.

"Tom Dacon" wrote in message
...


The stuff is so low in the water that it can't be picked up by radar.
A
debris object would have to be nearly as large as your boat to set off
any
radar collision alarm..


This hasn't been my experience. In calm inner waters, such as the inland
passage along the west coast of Canada, radar when set to short range
can
commonly pick up a log or the top of a deadhead if it breaks the water's
surface, and it will routinely pick up a seagull standing on top of it.
In
fact, I've even seen it pick up the riffles from a tidal rip.

Tom Dacon

Technique for avoiding collision with floating debris......
 

It was a complete thought.
Perhaps not a complete and proper sentence.

I supposed I assumed too much about the audience and understanding radar and the
subject of the thread....


real live story:

We were sailing off the coast of mexico on a 27' Santana, equipped with radar,
we noticed a some logs, so we went further west. This was in about 1989 or so.
It with my college buddy Dave; it was his boat; the boat was blue; it had new
sails old motor.

as we went further west, the radar was clear and we went down below for
something to eat.
that's when we felt the crunch. and the boat stop moving. and the water coming
in.

Coast guard found it.. it was 1' under the surface, sometimes bobbing up to the
surface.

There is NO WAY a radar an find anything underwater.
And if you set it so sensitive that a log is spotted, well then waves & swells
will probably trigger it off from time to time.

On Sat, 22 Nov 2003 01:31:19 GMT, wrote:

On Fri, 21 Nov 2003 17:23:41 -0800, Josh Assing wrote:

while sailing. Stuff like containers that fell off of freighters will show up on
RADAR. No matter what, there is never any substitute for paying attention. I


not if they're submerged just below the surface....


Please speak in complete thoughts, and maybe even cite real life examples to
support your claim that this could even happen.

Thank you
BB

Technique for avoiding collision with floating debris......
 

It was a complete thought.
Perhaps not a complete and proper sentence.

I supposed I assumed too much about the audience and understanding radar and the
subject of the thread....


real live story:

We were sailing off the coast of mexico on a 27' Santana, equipped with radar,
we noticed a some logs, so we went further west. This was in about 1989 or so.
It with my college buddy Dave; it was his boat; the boat was blue; it had new
sails old motor.

as we went further west, the radar was clear and we went down below for
something to eat.
that's when we felt the crunch. and the boat stop moving. and the water coming
in.

Coast guard found it.. it was 1' under the surface, sometimes bobbing up to the
surface.

There is NO WAY a radar an find anything underwater.
And if you set it so sensitive that a log is spotted, well then waves & swells
will probably trigger it off from time to time.

On Sat, 22 Nov 2003 01:31:19 GMT, wrote:

On Fri, 21 Nov 2003 17:23:41 -0800, Josh Assing wrote:

while sailing. Stuff like containers that fell off of freighters will show up on
RADAR. No matter what, there is never any substitute for paying attention. I


not if they're submerged just below the surface....


Please speak in complete thoughts, and maybe even cite real life examples to
support your claim that this could even happen.

Thank you
BB

Technique for avoiding collision with floating debris......
 

If.....radar was THAT sensitive then why was I, sailing a 43 footer, nearly
run over by a tanker in the English Channel between Flushing and Lowestoft?
The weather was stormy, rainy and it happened in the middle of the night
during a downpour!
And....vessels are not on auto pilot in that location.
Radar is a tool, but it does not replace common sense ;-)
--
c ya Wim
www.cruising.ca/thousand/f-index.html


"surfnturf" wrote in message
news:xlMvb.461044$pl3.204000@pd7tw3no...
: The waters cited are not prone to large swells, but I have been in a water
: taxi late at night and seen the radar pick out logs and other debris on
the
: water. It was overcast, poor visibility and moderately high wind at the
: time.
:
: Unfortunately, did not note manufacturer of unit.
:
: surfnturf
:
: "Doug Dotson" wrote in message
: ...
: Maybe on a dead calm sea.
:
: "Tom Dacon" wrote in message
: ...
:
:
: The stuff is so low in the water that it can't be picked up by
radar.
: A
: debris object would have to be nearly as large as your boat to set
off
: any
: radar collision alarm..
:
:
: This hasn't been my experience. In calm inner waters, such as the
inland
: passage along the west coast of Canada, radar when set to short range
: can
: commonly pick up a log or the top of a deadhead if it breaks the
water's
: surface, and it will routinely pick up a seagull standing on top of
it.
: In
: fact, I've even seen it pick up the riffles from a tidal rip.
:
: Tom Dacon
:
:
:
:
:
:

Technique for avoiding collision with floating debris......
 

If.....radar was THAT sensitive then why was I, sailing a 43 footer, nearly
run over by a tanker in the English Channel between Flushing and Lowestoft?
The weather was stormy, rainy and it happened in the middle of the night
during a downpour!
And....vessels are not on auto pilot in that location.
Radar is a tool, but it does not replace common sense ;-)
--
c ya Wim
www.cruising.ca/thousand/f-index.html


"surfnturf" wrote in message
news:xlMvb.461044$pl3.204000@pd7tw3no...
: The waters cited are not prone to large swells, but I have been in a water
: taxi late at night and seen the radar pick out logs and other debris on
the
: water. It was overcast, poor visibility and moderately high wind at the
: time.
:
: Unfortunately, did not note manufacturer of unit.
:
: surfnturf
:
: "Doug Dotson" wrote in message
: ...
: Maybe on a dead calm sea.
:
: "Tom Dacon" wrote in message
: ...
:
:
: The stuff is so low in the water that it can't be picked up by
radar.
: A
: debris object would have to be nearly as large as your boat to set
off
: any
: radar collision alarm..
:
:
: This hasn't been my experience. In calm inner waters, such as the
inland
: passage along the west coast of Canada, radar when set to short range
: can
: commonly pick up a log or the top of a deadhead if it breaks the
water's
: surface, and it will routinely pick up a seagull standing on top of
it.
: In
: fact, I've even seen it pick up the riffles from a tidal rip.
:
: Tom Dacon
:
:
:
:
:
:

Technique for avoiding collision with floating debris......
 

Subject: Technique for avoiding collision with floating debris......
From:

Stuff like containers that fell off of freighters will show up on
RADAR.

Not when they are full of water and just barely at or under the surface.

Capt. Bill

Technique for avoiding collision with floating debris......
 

Subject: Technique for avoiding collision with floating debris......
From:

Stuff like containers that fell off of freighters will show up on
RADAR.

Not when they are full of water and just barely at or under the surface.

Capt. Bill

Technique for avoiding collision with floating debris......
 

Subject: Technique for avoiding collision with floating debris......
From:

Please speak in complete thoughts, and maybe even cite real life examples to
support your claim that this could even happen.


OK, I can.
I saw a 76 foot Lazzara at the factory yard being reworked after it hit a
submerged container in, as I recall, broad daylight.
Is that good enough for you?

Capt. Bill