SMD's Multi-Mode Pre Lay Plough Completes First Job for Assodivers Ltd


World leading subsea equipment designer and manufacturer Soil Machine Dynamics Ltd (SMD) are pleased to announce that their Multi-Mode Pre Lay Plough, delivered to Greek offshore contractors Assodivers Ltd in Spring this year, has successfully completed its first offshore job in the Baltic sea.

The Multi-Mode Pre Lay Plough is the newest addition to SMD’s power cable installation and protection product range. This plough has configurations for boulder clearing, trenching and backfill. The boulder clearance pass clears a 13.0m wide route including surface and submerged boulders. The trenching pass creates an engineered ‘Y’ trench profile with a secure power cable pocket for subsequent lay process. The backfill pass moves the cut spoil excluding boulders back over the product for maximum cover. All three modes have responsive and controlled steering and a fully integrated sensor suite for as built survey of performance.

Managing Director for SMD’s Subsea Business, Paul Davison comments, “I am thrilled that we have been able to deliver the plough with all three configurations. Having multiple configurations available means this one plough can be set up to carry out a campaign of route clearance and power cable installation and cover processes making it economical in both cost and time, minimising lay risk and maximising lay speed. Assodivers are the first client who have this capability in a single vehicle. We have a longstanding relationship with Assodivers, they have two of our Atom Work Class ROV systems already in their fleet and we are pleased that they trust us and our equipment.”

The equipment was mobilised on board Assodivers’ DP-2 Construction Support Vessel, the Aethra, directly from SMD’s quayside access point.

Technical Manager from Assodivers, Aggelos Tziotakis comments, “We are excited with the opportunities that have arisen from the use of a unique tool such as the multi-mode pre-lay plough; The vehicle has already performed its maiden work in the offshore fields of the Baltic with very successful results.”

Offering a full turnkey solution, SMD delivered a 20ft Control Cabin and a 60Te stabilising frame operational in up to sea state 5 via their dedicated Deck Equipment business. The team were able to integrate the 60Te stabilising frame with Assodivers’ existing A-Frame.

The scissor type stabilising frame used in conjunction with the A-Frame is designed to maintain plough orientation and reduce side to side movement during launch and recovery; fore and aft motion is restricted by the tow wire.