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

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
:
:
:
:
:
:

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

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

x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie

Containers are scaring me! I never hit one yet. But, it took me hours to
free my rudder from an old abandon fishing net floating away below the
surface. They said that these nets could have been abandon or lost during
storms years ago.
"Rosalie B." wrote in message
...
x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie

In the Bay of Fundy Its not uncommon to see whales. At night some sleeps at
the surface of the water. Some sailors stated that they have at time came
close or touch the whale's back with either the bow of the tip of the boat
keel.
Having your depth sounder on appears to keep the whales awake?? Whether
this is a sailor's legend or not I do not know. I do not waist time arguing
about this legend I just turn the echo-sounder on.
As for the abandon floating fishing nets, the damages can be costly.
Last summer the owner of a sailboat had to have the strut, shaft and
propeller fixed.
Some time, it requires diving or dry docking to replace parts and repair
what needed.

"Denis Marier" wrote in message
...
Containers are scaring me! I never hit one yet. But, it took me hours to
free my rudder from an old abandon fishing net floating away below the
surface. They said that these nets could have been abandon or lost during
storms years ago.
"Rosalie B." wrote in message
...
x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie

In the Bay of Fundy Its not uncommon to see whales. At night some sleeps at
the surface of the water. Some sailors stated that they have at time came
close or touch the whale's back with either the bow of the tip of the boat
keel.
Having your depth sounder on appears to keep the whales awake?? Whether
this is a sailor's legend or not I do not know. I do not waist time arguing
about this legend I just turn the echo-sounder on.
As for the abandon floating fishing nets, the damages can be costly.
Last summer the owner of a sailboat had to have the strut, shaft and
propeller fixed.
Some time, it requires diving or dry docking to replace parts and repair
what needed.

"Denis Marier" wrote in message
...
Containers are scaring me! I never hit one yet. But, it took me hours to
free my rudder from an old abandon fishing net floating away below the
surface. They said that these nets could have been abandon or lost during
storms years ago.
"Rosalie B." wrote in message
...
x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie

Containers are scaring me! I never hit one yet. But, it took me hours to
free my rudder from an old abandon fishing net floating away below the
surface. They said that these nets could have been abandon or lost during
storms years ago.
"Rosalie B." wrote in message
...
x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie

x-no-archive:yes (LaBomba182) wrote:

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?

We frequently have objects that we do not see strike the hull in the
Dismal Swamp canal. Sometimes they hit around the bow and we can hear
them roll back to the stern. Sometimes they even set off the depth
sounder. Never have been able to see any of them. I've always
contended that they were dead bodies, but I suppose they would
eventually float up to the surface if they were.


grandma Rosalie