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tirant d'eau moyen sous quille

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18:23 Dec 26, 2001
This question was closed without grading. Reason: Answer found elsewhere

French to English translations [PRO]
Tech/Engineering / Maritime - stability - hydrostatic data
French term or phrase: tirant d'eau moyen sous quille
Dossier sur la stabilité de navires.

Données hydrostatiques.

Extrait :
"Ces données, calculées à l'assiette de projet en fonction du tirant d'eau moyen sous quille, doivent permettre la détermination des tirants d'eau extrêmes et de la stabilité initiale du navire."

Question :

« T.E. moyen sous quille » dans l’extrait au-dessus.

« Profondeur d’eau sous quille = under keel clearance ». (Eurodicautom).

« T.E. moyen = mean draft » mais « T.E. sous quille » ?

« T.E. sur quille = moulded draft »

Tirant d’eau (draft) : Distance verticale mesurée entre la ligne de flottaison et la partie la plus basse de la quille dans la section du navire considérée. (A)
Profondeur à laquelle un bateau ou une plate-forme de forage s'enfonce dans l'eau. (www.granddictionnaire.com)

Tirant d’eau sur quille (moulded draft ) : Distance verticale entre la face supérieure de la quille et la ligne de flottaison du tirant d'eau d'été au couple spécifié. (www.granddictionnaire.com )

If in layman's terms, "draft" is the depth of the boat underwater and "under keel clearance" is the amount of water under the bottom of the keel and the bottom of the sea, what on earth can "mean draft clearance" be?
Nikki Scott-Despaigne
Local time: 15:13
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Summary of answers provided
4 +2under keel clearance
Hazel Whiteley
4mean under-keel draft/draught
Sheila Hardie
4average//mean depth below keel
Guy Bray
4Mean draughtDPolice
1keel height
Didier Fourcot


Discussion entries: 2





  

Answers


11 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +2
under keel clearance


Explanation:
I'm not sure this is the same thing, but the reference should help you check.


    Reference: http://www.vicchannels.vic.gov.au/annual00/service.asp
    Reference: http://www.lockheedmartin.com/syracuse/maritime/port_moderni...
Hazel Whiteley
Local time: 14:13
Native speaker of: Native in EnglishEnglish, Native in SpanishSpanish
PRO pts in pair: 58
Grading comment
That's just the prob - it's a hybrid of this & "mean draft"

Peer comments on this answer (and responses from the answerer)
agree  Parrot: mean... There are several hits, anyway.
17 mins

agree  Jacqueline McKay
17 days
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The asker has declined this answer
Comment: That's just the prob - it's a hybrid of this & "mean draft"

42 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
Mean draught


Explanation:
US mean draft


    Dictionnaire de Vocabulaire Technique Maritime
    Dictionary of Naval Technical Vocabulary
DPolice
Local time: 15:13
PRO pts in pair: 454
Grading comment
T.E. moyen. Comment le concilier avec "sous quille"?
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The asker has declined this answer
Comment: T.E. moyen. Comment le concilier avec "sous quille"?

3 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
average//mean depth below keel


Explanation:
or clearance, free draught...

Guy Bray
United States
Local time: 06:13
Native speaker of: Native in EnglishEnglish
PRO pts in pair: 819
Grading comment
Impossible to average out the depth of water under the keel
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The asker has declined this answer
Comment: Impossible to average out the depth of water under the keel

5 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
mean under-keel draft/draught


Explanation:
Here are a few references, which I hope will help you with this term.

Good luck!

HTH

Sheila

http://www.marexlalb.org/hsunderk.htm
Underkeel clearance means the minimum clearance available between the deepest point on the vessel and the bottom, in still water. Masters and pilots shall apply a plus or minus allowance for the tide.


New Coast Guard underkeel clearance regulations for tank vessels without double hulls, took effect on November 27, 1996 (33 CFR 157.455).  The new regulations require, in part, that the Master calculate the tankship's deepest navigational draft and the controlling depth of the intended transit, including consideration of the following:


1.  The tankship's mean draft;


[PDF] Third Liquefied Gas Loading Dock in Bontang, Indonesia (Part ...
Formato de archivo: PDF/Adobe Acrobat
... This influences the minimum safe underkeel clearance which is thus determined for
the maximum loaded draft, including the trim. The mean draft, ie, the average ...
www.porttechnology.org/journals/ed9/download/09.253.pdf - Páginas similares


http://www.uscg.mil/hq/g-m/nvic/2_97/n2-97ch1.htm
Under-keel Clearance:

The master must ensure that there is adequate underkeel clearance at all stages of the voyage and at all times while at anchorage or berth.

In assessing the adequacy of underkeel clearance, the following factors must be taken into account:
 

*  the mean and deepest draft of the vessel
* the effect of trim and/or list
* the effect of squat at the anticipated maximum transit speeds at each stage of the voyage.
* charted depths
* the effect of tide and current
* the impact of weather on tidal effect
* effect of sea/swell conditions
* depth of water at berth or anchorage



http://www.tc.gc.ca/MarineSafety/Directorate/TP/TP10943/Tp10...
"draught" means the vertical distance from the moulded base line amidships to a subdivision load line;


Sheila Hardie
Spain
Local time: 15:13
Native speaker of: Native in EnglishEnglish
PRO pts in pair: 679
Grading comment
under keel height - depth water cannot be averaged out
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The asker has declined this answer
Comment: under keel height - depth water cannot be averaged out

1 day 15 hrs   confidence: Answerer confidence 1/5Answerer confidence 1/5
keel height


Explanation:
Ce n'est qu'en en disant rien qu'on est sûr de ne pas dire de bêtises...

Je propose par symétrie avec "tirant d'eau sur quille" mesuré à partir de la face supérieure de la quille de prendre "tirant d'eau sous quille" à partir de cette même surface:
"entre la face supérieure de la quille et son point le plus bas"

C'est alors la hauteur de la quille, du moins au couple considéré si on garde le parallèle avec la définition de "tirant d'eau sur quille"

Le "tirant d'eau moyen sous quille" devient alors "average keel height"

Ou alors je n'ai rien compris du tout...
Au fait si on pouvait échanger des dessins ou croquis sur ProZ, ça serait à mon avis plus utile que des séquences audio

Didier Fourcot
Local time: 15:13
Native speaker of: Native in FrenchFrench
PRO pts in pair: 756
Grading comment
Je suis, mais un profondeur d'eau moyen? Exc. idée croquis
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The asker has declined this answer
Comment: Je suis, mais un profondeur d'eau moyen? Exc. idée croquis




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