FprEN ISO 11812

SLOVENSKI STANDARD
oSIST prEN ISO 11812:2018
01-maj-2018
Mala plovila - Vodotesni prostori ter prostori in kabine s hitrim odvajanjem vode
(ISO/DIS 11812:2018)
Small craft - Watertight or quick draining recesses and cockpits (ISO/DIS 11812:2018)
Kleine Wasserfahrzeuge - Wasserdichte und schnell-lenzende Plichten (ISO/DIS
11812:2018)
Petits navires - Cavités et cockpits étanches ou autovideurs (ISO/DIS 11812:2018)
Ta slovenski standard je istoveten z: prEN ISO 11812
ICS:
47.080 ýROQL Small craft
oSIST prEN ISO 11812:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 11812:2018
oSIST prEN ISO 11812:2018
DRAFT INTERNATIONAL STANDARD
ISO/DIS 11812
ISO/TC 188 Secretariat: SIS
Voting begins on: Voting terminates on:
2018-02-21 2018-05-16
Small craft — Watertight or quick draining recesses and
cockpits
Petits navires — Cavités et cockpits étanches ou autovideurs
ICS: 47.080
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 11812:2018(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2018

oSIST prEN ISO 11812:2018
ISO/DIS 11812:2018(E) ISO/DIS 11812

Contents Page
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 5
5 General requirements . 6
5.1 Loading and measurement conditions . 6
5.2 Requirements for watertight and “quick draining” recesses . 6
6 Watertightness requirements . 7
6.1 Watertightness requirements for “watertight” recesses . 7
6.2 Watertightness requirements for “quick draining” recesses . 7
7 Requirements for companionway sills . 7
7.1 Companionway sills concerned . 7
7.2 Recess with a “reduced risk of flooding” . 8
7.3 Sill height measurement . 8
7.4 Minimum companionway sill height for “quick draining” recesses. 9
8 Height of recess bottom above waterline for quick-draining recesses . 9
9 Quick-draining recesses – Single bottom recesses drainage . 9
9.1 Drainage general requirements . 9
9.2 Drain requirements . 10
9.2.1 Number and dimensions . 10
9.2.2 Special provisions. 10
9.2.3 Installation . 10
9.3 Drainage calculations requirements . 11
9.3.1 Drainage calculation principle and assessment methods . 11
9.3.2 Simplified drainage assessment method. 12
10 Quick-draining recesses – Multi-bottom recesses drainage . 13
10.1 Drainage general requirements . 13
10.2 Drainage requirements for foot basin . 13
11 Owner’s manual — Documentation . 15
Annex A (normative) Full calculation method for draining time . 16
A.1 Preliminary . 16
A.2 Procedure for calculation of a single bottom recess . 16
A.3 Equations and detail of calculation for a multiple bottom recess . 18
A.4 Dimensions of non-circular drains . 19
A.5 Principle of calculation where the drain diameters are different . 20
A.6 Determination of minor head loss coefficients K . 20
A.6.1 General . 20
Annex B (Informative) Examples of draining time calculation for single level and double level bottom
recesses . 24
© ISO 2018
B.1 Determination of the required drain diameter by direct calculation or simple method of
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
clause 10 . 24
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address B.2 Examples assessment of recesses with several bottom levels . 26
below or ISO’s member body in the country of the requester.
B.2.1 Two bottoms recess without foot basin . 26
ISO copyright office B.2.2 Closed recess with two bottom levels (see Figure B.3 a) . 26
CP 401 • Ch. de Blandonnet 8
B.2.3 Recess with two level bottom and aft part open (see Figure B.3 b) . 27
CH-1214 Vernier, Geneva, Switzerland
B.3 Recess with foot basin . 28
Tel. +41 22 749 01 11
B.3.1 Presentation . 28
Fax +41 22 749 09 47
copyright@iso.org
Annex C (normative) Watertightness tests . 30
www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
oSIST prEN ISO 11812:2018
ISO/DIS 11812:2018(E)
Contents Page
Foreword . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 5
5 General requirements . 6
5.1 Loading and measurement conditions . 6
5.2 Requirements for watertight and “quick draining” recesses . 6
6 Watertightness requirements . 7
6.1 Watertightness requirements for “watertight” recesses . 7
6.2 Watertightness requirements for “quick draining” recesses . 7
7 Requirements for companionway sills . 7
7.1 Companionway sills concerned . 7
7.2 Recess with a “reduced risk of flooding” . 8
7.3 Sill height measurement . 8
7.4 Minimum companionway sill height for “quick draining” recesses. 9
8 Height of recess bottom above waterline for quick-draining recesses . 9
9 Quick-draining recesses – Single bottom recesses drainage . 9
9.1 Drainage general requirements . 9
9.2 Drain requirements . 10
9.2.1 Number and dimensions . 10
9.2.2 Special provisions. 10
9.2.3 Installation . 10
9.3 Drainage calculations requirements . 11
9.3.1 Drainage calculation principle and assessment methods . 11
9.3.2 Simplified drainage assessment method. 12
10 Quick-draining recesses – Multi-bottom recesses drainage . 13
10.1 Drainage general requirements . 13
10.2 Drainage requirements for foot basin . 13
11 Owner’s manual — Documentation . 15
Annex A (normative) Full calculation method for draining time . 16
A.1 Preliminary . 16
A.2 Procedure for calculation of a single bottom recess . 16
A.3 Equations and detail of calculation for a multiple bottom recess . 18
A.4 Dimensions of non-circular drains . 19
A.5 Principle of calculation where the drain diameters are different .
...