International Shore Connections (ISC) stand as indispensable safety mechanisms aboard merchant vessels. Mandated by the International Maritime Organization (IMO) under the Safety of Life at Sea (SOLAS) regulations, these universal hose connections serve as critical assets in shipboard firefighting, especially during instances of complete onboard pump failure.
The Significance of International Shore Connections
ISC serves a paramount purpose by providing a standby hose attachment that facilitates connections from shore or other vessels during emergencies, particularly when the ship’s internal fire pumps are incapacitated. This connection allows seawater to be supplied at a predetermined pressure, seamlessly linked to the ship’s fire main system.
Placement and Accessibility
Strategically positioned at accessible locations such as the Bridge or within the Fire locker, the ISC flange ensures swift accessibility in times of crisis. This deliberate placement guarantees its immediate availability for employment during emergency scenarios.
Adherence to SOLAS Standards
SOLAS mandates that ships with a gross tonnage of 500 and above must be equipped with at least one ISC. Characterized by standardized dimensions applicable across all nations and vessels, these connections facilitate firefighting aid from any port during emergencies outside the ship’s home port.
Technical Specifications
- Outside Diameter (OD): 178mm
- Inside Diameter (ID): 64mm
- Bolt Circle Diameter (PCD): 132mm
- Slots in Flange: 4 holes 19mm in diameter spaced equidistantly on a bolt circle of the above diameter, slotted to the flange periphery.
- Flange Thickness: 14.5mm minimum
- Bolts & Nuts: 4, each of 16mm diameter, 50mm in length
Necessity Across Maritime Infrastructure
Essential for ships, jetties, and offshore platforms alike, the ISC ensures a reliable emergency source of firefighting water. Constructed from durable materials such as steel, these connections are designed to withstand service pressures of up to 1.0 N/mm².
In summary, the International Shore Connection represents a modest yet indispensable component aboard merchant vessels. Its pivotal role in safeguarding the vessel and its crew during emergencies cannot be overstated. Through a comprehensive understanding of its function, compliance standards, and technical specifications, the significance of this often overlooked equipment becomes apparent, underscoring its critical importance in maritime safety protocols.
