Folding Hatch Cover
critical
IMO Required
Hydraulically operated folding-type hatch covers for weathertight closure.
4000h
Service Interval
Typical Manufacturers
MacGregor
TTS
Newstar
Known Models (9)
MacGregor Folding Type HC
1.75 t/m² load capacity
· Cargo Hold Access
Common Failures:
- • Compression bar rubber deterioration
- • Hydraulic cylinder rod scoring
- • Cleating mechanism misalignment
Service: Hose test every 6 months. Replace packing rubbers when compression <30%. Ultrasonic tightness test per IACS.
Spares: MacGregor: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
MacGregor C-Type Folding Cover
Weather-tight per ICLL
· Cargo Hold Access
· folding
type: folding
actuation: hydraulic
sealing: compression_bar
panels: 4
Common Failures:
- • Compression bar seal deterioration
- • Hinge pin wear
- • Hydraulic cylinder rod corrosion
- • Drain channel blockage
Service: Hose-test quarterly; replace compression bars at 5-year intervals.
Spares: MacGregor: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
MacGregor Piggyback Folding Cover
Weather-tight per ICLL
· Cargo Hold Access
· piggyback_folding
type: piggyback_folding
actuation: hydraulic
panels: 4
Common Failures:
- • Stack cylinder seal failure
- • Interlock mechanism wear
- • Panel edge corrosion
Service: Lubricate interlock mechanism monthly; inspect panel edges for wastage.
Spares: MacGregor: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
MacGregor Multi-Panel Folding Cover
Weather-tight per ICLL
· Cargo Hold Access
· multi_panel_folding
type: multi_panel_folding
actuation: hydraulic
panels: 6
Common Failures:
- • Panel alignment shift
- • Cross-joint seal leak
- • Cleating mechanism failure
Service: Check panel alignment after heavy weather; grease cleats monthly.
Spares: MacGregor: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
Newstar Newstar Folding HC
1.75 t/m² load capacity
· Cargo Hold Access
Common Failures:
- • Gasket hardening
- • Coaming drain valve corrosion
- • Panel top plate buckling
Service: Full weathertightness test every annual survey. Gasket replacement at dry-dock.
Spares: Newstar: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
Newstar Marine NS Economy Folding Cover
Weather-tight per ICLL
· Cargo Hold Access
· folding
type: folding
actuation: hydraulic
panels: 2
Common Failures:
- • Seal compression loss
- • Cylinder drift
- • Drain channel corrosion
Service: Frequent hose testing for coastal/river service; maintain drain channels.
Spares: Newstar Marine: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
Newstar Marine NS Hydraulic Folding Cover
Weather-tight per ICLL
· Cargo Hold Access
· folding
type: folding
actuation: hydraulic
remote_control: True
Common Failures:
- • Remote control communication failure
- • Panel locking pin wear
- • Coaming seal damage
Service: Test remote operation monthly; inspect locking pins quarterly.
Spares: Newstar Marine: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
TTS TTS Folding Hatch Cover
1.75 t/m² load capacity
· Cargo Hold Access
· Folding Mechanism
Common Failures:
- • Side rail wear strip deterioration
- • Panel hinge pin elongation
- • Drain channel blockage
Service: Inspect hinge pins annually. Clear drain channels before each cargo operation.
Spares: TTS: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.
✔ Pros
- • Easy to operate and maintain
- • Provides a watertight seal to prevent water ingress
- • Folding design allows for efficient cargo handling
- • Can be customized to fit various vessel types
- • Durable construction for long-term use
⚠ Cons
- • Side rail wear strip deterioration can lead to reduced performance
- • Panel hinge pin elongation may require frequent maintenance
- • Drain channel blockage can cause water accumulation
- • May require more frequent inspection compared to other hatch cover types
- • Higher upfront cost compared to some alternative designs
Typical Vessels:
Bulk CarrierContainerGeneral Cargo
Certifications:
DNVABSLR
Decision Guide: Choose if you prioritize easy cargo handling and a watertight seal, and have a budget that accommodates the upfront cost. Avoid if you are looking for a low-maintenance option or have limited space for the folding mechanism.
Use Cases: Typically deployed on bulk carriers, container ships, and general cargo vessels that require frequent cargo loading and unloading operations.
TTS Marine TTS Folding Hatch Cover
Weather-tight per ICLL
· Cargo Hold Access
· folding
type: folding
actuation: hydraulic
panels: 4
Common Failures:
- • Rubber seal aging
- • Hinge bearing seizure
- • Hydraulic pipe corrosion
Service: Replace rubber seals every 4 years; protect hydraulic piping.
Spares: TTS Marine: Ersatzteile per Hersteller. Lead time: 3-8 Wochen. Dichtungen und Ventileinsätze an Bord vorhalten.