Lifebuoy Rongsheng 4.3kg

1. Basic Information

• Product Name: Rongsheng Lifebuoy 4.3kg
• Model/Code: RS5555-II
• Equipment Type: Life-saving Appliance (LSA)
• Origin: China
• Standards & Approvals: SOLAS 1974 compliant, approved by CCS / EC / ZY
• Image:

2. Intended Use

Main Application: Man-overboard rescue device; provides temporary buoyancy support until recovery.

Applicable Environment: Passenger vessels, cargo ships, offshore facilities, and inland watercraft (as per applicable regulations).

Benefits:

• High buoyancy ensures safety for persons overboard.
• Manufactured with seawater-resistant, UV-stable materials.
• Easy to store and deploy quickly in emergencies.
• Compatible with additional accessories (light, smoke signal, throwing line) as required by SOLAS/class regulations.

3. Instructions for Use

Installation:

Store on brackets/holders in accessible positions: main deck, superstructure deck, near embarkation points.

Lights, smoke signals, or throwing lines must be installed separately as required by vessel arrangement.

Operation:

In case of man-overboard: throw or release the lifebuoy near the casualty to provide immediate flotation support.

If equipped with accessories (light/smoke), these will activate according to their own mechanism (sold separately).

Maintenance & Periodic Inspection:

Check HDPE shell, PU foam core, retro-reflective tape, and grab line (if fitted).

For buoys fitted with accessories: test light function, inspect smoke signal condition and expiry date as per supplier’s instructions.

Ensure vessel name and port of registry are clearly marked on the lifebuoy body.

Safety Notes:

Do not attach a throwing line to buoys designated for light/smoke signals.

Ensure brackets and quick-release mechanisms (if fitted) allow immediate deployment.

4. Technical Specifications

• Outer Diameter: 760 ± 5 mm
• Inner Diameter: 468 ± 5 mm
• Height (Thickness): 110 mm
• Weight: 4.3 kg
• Shell Material: HDPE (High-density polyethylene) – seawater and UV resistant
• Core Material: Rigid PU foam – stable buoyancy
• Standards: SOLAS 1974; CCS / EC / ZY approved

5. Detailed Description & Key Features

• Robust Construction: HDPE outer shell with excellent corrosion resistance and low maintenance.
• Reliable Buoyancy: PU foam core ensures stable flotation and immediate support.
• Accessory Compatibility: Designed to be used with optional self-igniting lights, smoke signals, or throwing lines (sold separately and installed as required).
• Ease of Use: Optimal size and weight for rapid deployment overboard.
• Durability: Built for marine environments; service life typically 3–5 years depending on storage and maintenance conditions.

6. Regulations:

For passenger ships:

Ship Length	Number of Lifebuoys
Under 60m	08
60 – 120m	12
120 – 180m	18
180 – 240m	24
Over 240m	30

For cargo ships:

Ship Length	Number of Lifebuoys
Under 100m	08
From 100m to under 150m	10
From 150m to under 200m	12
Over 200m	14

Among the lifebuoys listed in the table above, at least two must be equipped with a lifeline, with one lifebuoy placed on each side of the ship.

Lifebuoys with lifelines are typically positioned in lower areas: on the main deck, forecastle deck, poop deck, and near gangways. These lifebuoys must not be fitted with self-igniting lights or buoyant smoke signals.

At least half of the lifebuoys specified in the table must be fitted with self-igniting lights. Lifebuoys with lights are generally placed in lower positions and on accommodation decks. The number of lifebuoys with lights must be evenly distributed on both sides of the ship. Lifebuoys fitted with self-igniting lights must not be equipped with lifelines.

Of the lifebuoys fitted with self-igniting lights, at least two must be equipped with self-activating buoyant smoke signals, and these must be capable of quick release from the bridge, with one lifebuoy placed on each side of the ship. The buoyant smoke signals must automatically activate upon contact with water. The smoke must be easily distinguishable (orange in color) and emitted consistently for at least 15 minutes. The smoke signal must be capable of remaining above water and continue to emit smoke even if fully submerged for up to 10 seconds. Lifebuoys with self-igniting lights and smoke signals must be positioned on both sides of the bridge wing.

During inspections, the surveyor must confirm that the ship is equipped with the required number of approved lifebuoys, that they are in satisfactory condition, and that they are positioned in accordance with regulations. The lifebuoys must display the ship’s name and port of registry, and their accompanying components, such as lifelines, retro-reflective tape, self-igniting lights, and smoke signals, must be checked. The self-igniting lights must be tested for functionality, and the expiration date of the smoke signals must be verified.

The surveyor must also confirm that the storage arrangements for the lifebuoys are in good condition and that the lifebuoys can be quickly retrieved from their storage positions for immediate use. The quick-release mechanisms for the lifebuoys fitted with self-igniting lights and buoyant smoke signals must also be checked from the bridge deck.

7. Commercial Information

Manufacturer: Rongsheng, China

Warranty & After-sales Service: Subject to supplier’s terms.