Onderwerp: Bezoek-historie

Chapter II-1 Construction - Structure, subdivision and stability, machinery and electrical installations
Geldigheid:24-09-2012 t/m 11-02-2015Versie:1/6▶vergelijk Status: Was geldig

Dit onderwerp bevat de volgende rubrieken.

SOLAS

Chapter II-1 - Construction - Structure, subdivision and stability, machinery and electrical installations

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1 Use of butterfly valves instead of screw-down valves

SOLAS

Chapter II-1

Use of butterfly valves instead of screw-down valves
SOLAS Chapter II-1, regulation 12 is clear: valves shall be of the screw down type. For other types a formal exemption request shall be submitted.
However, within the IMO amendments are proposed and under consideration to accept butterfly valves on specific ship types.

 

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2 Procedures for open watertight doors passenger ships

SOLAS

Chapter II-1

Procedures for open watertight doors passenger ships (12-19)
SOLAS CH II-1 reg. 22.3 requires watertight doors on board of passenger ships to remain closed during navigation. According to SOLAS CH II-1 reg. 22.4 only in special circumstances and under specific conditions navigation with open watertight doors may be allowed by the administration. MSC.1/Circ.1380 sets criteria for watertight doors that should be open at sea under normal circumstances in order to allow for a safe passage of passengers or for a safe operation of the ship. The Netherlands Shipping Inspectorate deems these requirements appropriate and will address MSC.1/Circ.1380 as ‘policy rule’ for all passenger ships.
Not later than at the first annual survey after 01 January 2013, all passenger ships flying the Netherlands flag shall have assessed and documented the procedures for open watertight doors in compliance with MSC.1/Circ.1380.

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3 Interpretation on partial reduction in propulsion capability

SOLAS

Chapter II-1

Interpretation on partial reduction in propulsion capability (13-03)
With regards to SOLAS Chapter II-I, Regulation 26.3, the Netherlands Shipping Inspectorate states the following interpretation:
NSI may accept that, under specific conditions as set out in individual class rules, a partial reduction in propulsion capability from “normal operation” in lieu of the carriage of spare pumps on vessels with multiple engines driving a single propeller shaft or multiple engines driving multiple propeller shafts provided the reduced propulsion power capability is at least forty percent of the total rated propulsion power of the vessel.
Meanwhile, the IACS technical Committee has been asked by the NSI to look into this subject, which was confirmed by the IACS organisation.

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4 Damage stability unmanned towed barges (11-18)

SOLAS

Chapter II-1

Damage stability unmanned towed barges (11-18)
Unmanned towed split hopper barges need only to comply with damage stability criteria of the DR-68 when a reduced freeboard based on DR-68 is assigned. When the hopper barge is only allowed to sail at the international load line draught, no damage stability criteria apply.

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