Glossary entry

French term or phrase:

3,4 nd portant au 90

English translation:

3.4 kn. dir 90 deg

Added to glossary by Carol Gullidge
Apr 20, 2010 17:22
14 yrs ago
French term

3,4 nd portant au 90

French to English Other Ships, Sailing, Maritime tidal currents
3,4 nd portant au 90 pour la V.E. moyenne (coefficient 95).
1,8 nd pour la M.E. moyenne (coefficient 45).
+ Vitesse < 0,05 nd.
...

1,8 nd pour la M.E. moyenne (coefficient 45).
+ Vitesse < 0,05 nd.

Courants de marées : Vive EAU
1 h APRÈS PM BREST
3 h APRÈS PM BREST
____________

My GUESS is that "nd" means knots/noeuds.
V.E. stands for Vive Eau (spring tide) and M.E. is Morte Eau (neap tide)
This accompanies 2 maps (1 hr and 3 hrs) showing masses of little arrows of varying thicknesses - presumably denoting the strength of the currents??)

Assuming that I'm right about nd = knots, then I'd be very grateful for any help with "portant au 90" - many thanks!

Proposed translations

+2
2 hrs
Selected

3.4 kn. dir 90 deg

presumably underwater wind

bearing 90°
Note from asker:
many thanks Graham! I know from past experience that you're a bit of an "old salt" - in the best possible sense! I have to admit though, as a total landlubber, I find the idea of underwater wind a bit mind boggling!
Peer comment(s):

agree Tony M
14 mins
thanks Tony
agree Jack Dunwell : Got you, G! This is Drift of 3.4 knots and set= 90°
22 hrs
isn't it the direction of the tidal flow?// ah, was beginning to wonder if my answer made sense :-)
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Many thanks once again Graham! It is indeed talking about the tidal flow, and this is "(verbatim) the answer I used - and it fits very nicely in the pdf!"
31 mins

downwind 3,4 knots, steering eastward

Seems to be the clearest !
"Downwind": web.ref. 1
"au 90" = steering eastward: web.ref.2
Note from asker:
many thanks Michel, although I agree with Tony that currents probably don't "steer" - with the proviso that I know I could easily be proved wrong!
Peer comment(s):

neutral kashew : No commas in English decimals please.
11 mins
Of course, you're right, thank you. Mistyping...
neutral Tony M : I'm not sure if a current would be described as 'downwind', and I think 'on a bearing of 90°' would be better than 'streeing eastward' — if we're talking about the current, of course!
1 hr
Something went wrong...
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