Section 4 Towing arrangements

Clasification Society 2024 - Version 9.40

Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 4 Ship Structures (Ship Types) - Chapter 8 Tugs, Pusher Tugs and Launches - Section 4 Towing arrangements

Section 4 Towing arrangements

4.1 General

4.1.1 Towing bitts, a towing hook or a towing winch are to be fitted on a tug and should normally be situated 5 to 10 per cent of the ship’s length abaft amidships, but it is the designer’s responsibility that positive vertical and lateral stability in all circumstances is ensured.

4.1.2 Towing hooks and towing winches should have reliable slip arrangements, which facilitate towline release regardless of the angle of heel.

4.2 Deck structure

4.2.1 The deck structure in way of the towing bitt or towing winch is to be suitably strengthened and supported by means of pillars and girders. The scantlings of this deck structure may be determined by direct calculation using the information given in Pt 4, Ch 8, 7 Direct calculation procedures.

Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.