"dead" reckoning is NEVER dead on. It can't be. It is physically impossible.

even guessing for wind and current makes no difference.

now, over the knee, *if* you -- like jeffies before you -- wish to change the
definition to the term to include pilotage, well go ahead. At least you would
be safer should you ever find yourself on the water.

over the knee obviously does not, so let's help out a bit.

Main Entry: de·duce
Pronunciation: di-'düs, dE-; chiefly British -'dyüs
Function: transitive verb
Inflected Form(s): de·duced; de·duc·ing
Etymology: Middle English, from Latin deducere, literally, to lead away,
from
de- + ducere to lead �more at TOW
Date: 15th century
1 : to determine by deduction; specifically : to infer from a general
principle

synonym see INFER
- de·duc·ible /-'d(y)ü-s&-b&l/ adjective

You gotta make up your mind, jax. You were talking about "dead
reckoning" before, the term many use when employing time/direction/speed
only.
"deduced reckoning" applies when allowance is made for wind and current
.... something you say is impossible.
Mayhaps you should go back to the books for some further study.

otn

As per usual, a number of problems with this post.
1. It is in no way a response or related to my post.
2. You are wrong when you say "DR" is never dead on (but that's beyond
your knowledge or experience).
3. I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.

Sheesh, you do ramble.

otn

JAXAshby wrote:
"dead" reckoning is NEVER dead on. It can't be. It is physically impossible.

even guessing for wind and current makes no difference.

now, over the knee, *if* you -- like jeffies before you -- wish to change the
definition to the term to include pilotage, well go ahead. At least you would
be safer should you ever find yourself on the water.


over the knee obviously does not, so let's help out a bit.

Main Entry: de·duce
Pronunciation: di-'düs, dE-; chiefly British -'dyüs
Function: transitive verb
Inflected Form(s): de·duced; de·duc·ing
Etymology: Middle English, from Latin deducere, literally, to lead away,

from

de- + ducere to lead �more at TOW
Date: 15th century
1 : to determine by deduction; specifically : to infer from a general

principle

synonym see INFER
- de·duc·ible /-'d(y)ü-s&-b&l/ adjective

You gotta make up your mind, jax. You were talking about "dead
reckoning" before, the term many use when employing time/direction/speed
only.
"deduced reckoning" applies when allowance is made for wind and current
.... something you say is impossible.
Mayhaps you should go back to the books for some further study.

otn

jeffies is not smart (without asking his wife) to use the word "pilotage". he
merely said something about known ladmarks. same same.

I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.

JAXAshby wrote:
jeffies is not smart (without asking his wife) to use the word "pilotage". he
merely said something about known ladmarks. same same.


I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.



..... and you, typically, took it out of context, and created a new
argument, which was unrelated to the discussion at hand, and tried to
pawn it off as "someone else said".
Lame attempt, try again.

otn

over the knee, jeffies brought it up as proof that DR was precise navigating,
not me.

jeffies is not smart (without asking his wife) to use the word "pilotage".
he
merely said something about known ladmarks. same same.


I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.



..... and you, typically, took it out of context, and created a new
argument, which was unrelated to the discussion at hand, and tried to
pawn it off as "someone else said".
Lame attempt, try again.

otn

I never made any such claim. In fact, I was only asserting the simple fact that
DR does involve known reference points.

I've never claimed the DR was "precise," I've only claimed that it is good
enough to be useful, and a necessary skill for any skipper that wishes to be
competent.

You're the one who claims that DR is so worthless that navigation without GPS is
physically impossible. And since you've admitted to being lost with two
functioning GPS's onboard, its a good thing you don't actually go sailing at
all.



"JAXAshby" wrote in message
...
over the knee, jeffies brought it up as proof that DR was precise navigating,
not me.

jeffies is not smart (without asking his wife) to use the word "pilotage".
he
merely said something about known ladmarks. same same.


I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.



..... and you, typically, took it out of context, and created a new
argument, which was unrelated to the discussion at hand, and tried to
pawn it off as "someone else said".
Lame attempt, try again.

otn

jeffies, **if** you know where you are using known (sic) reference point, THEN
that is called pilotage, not deduced reckoning.

you have changed the definition of the term DR to that of pilotage. you can
change it to green Shinola if you wish but it still doesn't make it safe to
wonder around in a fog with rocks anywhere near by.

I never made any such claim. In fact, I was only asserting the simple fact
that
DR does involve known reference points.

I've never claimed the DR was "precise," I've only claimed that it is good
enough to be useful, and a necessary skill for any skipper that wishes to be
competent.

You're the one who claims that DR is so worthless that navigation without GPS
is
physically impossible. And since you've admitted to being lost with two
functioning GPS's onboard, its a good thing you don't actually go sailing at
all.



"JAXAshby" wrote in message
...
over the knee, jeffies brought it up as proof that DR was precise
navigating,
not me.

jeffies is not smart (without asking his wife) to use the word
"pilotage".
he
merely said something about known ladmarks. same same.


I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.



..... and you, typically, took it out of context, and created a new
argument, which was unrelated to the discussion at hand, and tried to
pawn it off as "someone else said".
Lame attempt, try again.

otn

No jaxie, I didn't mention "known ladmarks" and I wasn't referring to
"pilotage." Its very simple: any DR plot begins with a known reference point
called a "fix." If you knew anything about DR you would understand that. I
would guess that most pilots know what their starting point is - that's a
reference point.




"JAXAshby" wrote in message
...
jeffies is not smart (without asking his wife) to use the word "pilotage". he
merely said something about known ladmarks. same same.

I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.

jeffies, you definitely said *you* know where *you* are because you have
reference points in DR. listen to me. you do NOT have reference points in DR.
you ONLY have where you started (and you don't even know where that is once
you have started), your speed through the medium and which direction mag North
is. That's it.

No jaxie, I didn't mention "known ladmarks" and I wasn't referring to
"pilotage." Its very simple: any DR plot begins with a known reference
point
called a "fix." If you knew anything about DR you would understand that. I
would guess that most pilots know what their starting point is - that's a
reference point.




"JAXAshby" wrote in message
...
jeffies is not smart (without asking his wife) to use the word "pilotage".
he
merely said something about known ladmarks. same same.

I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.

"JAXAshby" wrote in message
...
jeffies, you definitely said *you* know where *you* are because you have
reference points in DR.

Show us where I said that. You're fantasizing an entire discussion, jaxie.
Time for those meds.

listen to me. you do NOT have reference points in DR.
you ONLY have where you started

That's one reference point ...

(and you don't even know where that is once
you have started), your speed through the medium and which direction mag North
is.

That's another reference point.

That's it.

I think "2" is substantially difference than "0." You've just admitted that DR
has two reference points. Maybe you're catching on after all, jaxie.



No jaxie, I didn't mention "known ladmarks" and I wasn't referring to
"pilotage." Its very simple: any DR plot begins with a known reference
point
called a "fix." If you knew anything about DR you would understand that. I
would guess that most pilots know what their starting point is - that's a
reference point.




"JAXAshby" wrote in message
...
jeffies is not smart (without asking his wife) to use the word "pilotage".
he
merely said something about known ladmarks. same same.

I didn't see anywhere, where Jeff introduced "pilotage" in a way to
change the definition.