ISO 3786:1975
(Main)Shipbuilding - Inland navigation towing hooks - Scale of tractive efforts
Shipbuilding - Inland navigation towing hooks - Scale of tractive efforts
Applicable to towing hooks used on tugs of all types and purposes, intended for towage on inland waterways.
Construction navale — Crocs de remorque pour navigation intérieure — Échelle des efforts de traction
General Information
Overview - ISO 3786:1975 (Shipbuilding - Inland navigation towing hooks)
ISO 3786:1975 defines a standardized scale of nominal tractive efforts for towing hooks used on tugs operating on inland waterways. Published by ISO/TC 8 (Shipbuilding) in 1975, the standard is applicable to towing hooks fitted to tugs of all types and purposes engaged in towage on rivers, canals and other inland navigation routes. It provides a common basis for classifying and specifying towing hook capacity in both kilonewtons (kN) and tonnes-force (tf).
Key topics and technical requirements
- Scope and applicability: Applies specifically to towing hooks used on inland navigation tugs (harbour tugs and line tugs).
- Definition of nominal tractive effort: Nominal tractive effort is the traction developed by a harbour tug during berthing or by a line tug during towing at a speed of 5 knots (9 km/h).
- Standardized scale of tractive efforts: Values are given in kN and tf to harmonize specification and classification of towing hooks. The nominal tractive effort values listed in the standard include:
- 6.3 kN (0.63 tf)
- 10 kN (1.0 tf)
- 16 kN (1.6 tf)
- 25 kN (2.5 tf)
- 40 kN (4.0 tf)
- 63 kN (6.3 tf)
- 100 kN (10.0 tf)
- 160 kN (16.0 tf)
- 220 kN (22.0 tf)
- 320 kN (32.0 tf)
- Purpose: Establishes a basis for the normalization of towing device elements rather than prescribing detailed hook geometry or material specifications.
Applications - who uses ISO 3786:1975
- Shipbuilders and naval architects specifying towing arrangements for inland tugs
- Manufacturers and suppliers of towing hooks and deck towing equipment
- Classification societies and inspection bodies assessing towing gear capacity
- Port authorities and operators setting procurement and operational requirements
- Maintenance teams and marine surveyors verifying hook ratings and replacement parts
Practical uses include selecting appropriately rated towing hooks, drafting technical specifications for procurement, ensuring consistency in equipment classification, and supporting safety and operational planning for inland towage.
Related standards and context
- Developed by ISO/TC 8 (Shipbuilding) and intended to complement other shipbuilding and towing-gear standards.
- Users should consult relevant maritime regulations, classification society rules, and more recent ISO standards covering towing gear design, testing and materials for up-to-date technical requirements.
Keywords: ISO 3786:1975, shipbuilding, inland navigation towing hooks, scale of tractive efforts, nominal tractive effort, towing hooks, inland waterways, tug towage.
Standards Content (Sample)
INTERNATIONAL STANDARD 3786v
!NTERNATIONAL ORGANIZATION FOR SYANDARDIZATION l MtI’KJYfiAPO~HA5l OP!-AHM3.44MII I-l0 CTAHAAPTM3ALWM~ORGANISATION INTERNATIONALE DE NORMALISATION
Shipbuilding - Inland navigation towing hooks - Scale of
tractive efforts
Construction navale - Crocs de remorque pour navigation in t&ieure - ikhelie des efforts de traction
First edition - 1975-12-15
UDC 629.122 : 629.1.07
Ref. No. ISO 37864975 (E)
Descriptors : shipbuilding, inland navigation, draw hooks, tension, classification.
Price based on 1 page
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technicai Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the ISO Council. d
International Standard ISO 3786 was drawn up by Technical Committee ISO/TC 8,
Shipbuilding, and circulated to the Member
...
NORME INTERNATIONALE.
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPO,QHAII OPI-AHM3AL.Wi Il0 CTAHAAPTM3ALWi *ORGANISATION INTERNATIONALE DE NORMALISATION
Construction navale - Crocs de remorque pour navigation
Échelle des efforts de traction
intérieure -
Shipbuilding - lnland navigation towing hooks - Scale of tractive efforts
Première édition - 1975-12-15
Réf. no : ISO 37864975 (F)
CDU 629.122 : 629.1.07
Descripteurs : construction navale, navigation fluviale, crochet de traction, traction, classification.
Prix basé sur 1 page
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres KO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 3786 a été établie par le Comité Technique ISO/TC 8,
Construction navale, et soumise aux Comités Membres en décembre 1974.
Elle a été approuvée par les Comités Membres des pays suivants :
Autriche Fra
...
NORME INTERNATIONALE.
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPO,QHAII OPI-AHM3AL.Wi Il0 CTAHAAPTM3ALWi *ORGANISATION INTERNATIONALE DE NORMALISATION
Construction navale - Crocs de remorque pour navigation
Échelle des efforts de traction
intérieure -
Shipbuilding - lnland navigation towing hooks - Scale of tractive efforts
Première édition - 1975-12-15
Réf. no : ISO 37864975 (F)
CDU 629.122 : 629.1.07
Descripteurs : construction navale, navigation fluviale, crochet de traction, traction, classification.
Prix basé sur 1 page
AVANT-PROPOS
L’ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres KO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 3786 a été établie par le Comité Technique ISO/TC 8,
Construction navale, et soumise aux Comités Membres en décembre 1974.
Elle a été approuvée par les Comités Membres des pays suivants :
Autriche Franc
...
Frequently Asked Questions
ISO 3786:1975 is a standard published by the International Organization for Standardization (ISO). Its full title is "Shipbuilding - Inland navigation towing hooks - Scale of tractive efforts". This standard covers: Applicable to towing hooks used on tugs of all types and purposes, intended for towage on inland waterways.
Applicable to towing hooks used on tugs of all types and purposes, intended for towage on inland waterways.
ISO 3786:1975 is classified under the following ICS (International Classification for Standards) categories: 47.060 - Inland navigation vessels. The ICS classification helps identify the subject area and facilitates finding related standards.
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