50Te Horizontal Lay System

The MDL HLS-50 is a portable horizontal lay system for the deployment and recovery of subsea umbilicals, risers and flowlines (SURF).

The system allows for safe and efficient deployment of product from on-deck reel drive systems and carousels.


Lay spread type
Portable Horizontal Lay System

18.1m x 9.8m x 10.4m (LxBxH)

With moonpool open
18.1m x 9.8m x 12.4m (LxBxH)

65Te excluding tensioner

Work platform deck area

Work platform deck capacity

Work platform opening

Hang-off beam capacity


Maximum pipe tension
50Te (dynamic load)

Minimum pipe diameter
50mm OD

Maximum pipe diameter
600mm OD

Entry chute radius

Overboarding chute radius

Lifting Equipment

All items supplied with dedicated rigging rated for onshore lifts.

System suitable for onshore lifts in accordance with DNV standards.

Power Requirements

1x 55kW (HLS only)

Design Appraisal

Design appraised in accordance with DNV standards.

Assumed Conditions

Up to 100%

Marine/high salinity

Design temperature
Operational: -10ºC to +50ºC

Survival: -20ºC to +65ºC

Design life
25 years

Additional Information

• Modular system that is transportable in standard shipping containers allowing economical road/sea transport

• Lifted on board in a single lift (excluding tensioner)

• Operational within 4 hours

• Designed in accordance with DNV standards

Work Platform: The work
platform is fitted with pad eyes
for attachment of rigging to aid
handling of the product.

Access: All areas of the HLS are accessible by integrated ladders and walkways with handrails.

Modularity: The HLS can be
broken down into modular components for both sea and road transport. The maximum single component lift is 26Te (excluding tensioner), which is
the base frame with integrated hang-off assembly.

Mdl Hls