Section 2 Longitudinal strength
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Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 4 Ship Structures (Ship Types) - Chapter 5 Barges and Pontoons - Section 2 Longitudinal strength

Section 2 Longitudinal strength

Parent topic: Chapter 5 Barges and Pontoons

2.1 General

2.1.1 Longitudinal strength calculations are to be made in accordance with the requirements given in Pt 3, Ch 4 Longitudinal Strength, and the ship service factor, f 1, is given in Table 5.2.1 Ship service factor f 1 .

Table 5.2.1 Ship service factor f 1

  f 1
Type of ship `100A1' `100A1 extended protected water service'
Barge for the carriage of general cargo in holds and for the carriage of liquid cargoes in bulk 1,0 0,80
Pontoons for the carriage of non-perishable cargoes on deck
Shipborne barges for the carriage of general cargo in holds and unmanned — 0,70

2.1.2 The requirements of Pt 3, Ch 4, 8.3 Loading instrument regarding loading instruments are not applicable to barges and pontoons.

2.1.3 For shipborne barges, where it is the intention to lift the barge on board ship by crane, a condition `fully loaded barge suspended by crane' is to be submitted. For this condition the following stresses are permissible:

  • Bending stress σb = 147,2 N/mm2
  • Shear stress τ = 98,1 N/mm2
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