Home » Case Studies » 45-Day MOH Job of Four CAT 35 Engines Completed in 40 Days, Securing Millions for Rig Owner
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Case Study
45-Day MOH Job of Four CAT 35 Engines Completed in 40 Days, Securing Millions for Rig Owner
Table of Contents
Background
Industry
Oil & Gas
Solution
Major Overhaul
(MOH) of
Four Engines
Make & Model
Caterpillar
(CAT) 35
Series Engines
Asset
Offshore
Drilling Rig
(at Dubai Dry Dock)
Objective
To complete a major overhaul (MOH) of four CAT 35 engines, including the supply of critical spares, within a strict 45-day deadline at Dubai Dry Dock for a global offshore drilling company.
Challenge / Problem Context
Engine room had limited space, allowing work on only two engines at a time.
Strict 45-day deadline where any delay meant a 90-day rig deployment loss and millions in missed revenue.
Low vendor confidence due to previous delays caused by a local service provider.
Labour shortage and challenges in handling heavy components like crankshafts and alternators in tight spaces.
Labour shortage and challenges in handling heavy components like crankshafts and alternators in tight spaces.
What Did We Do?
Planned staggered execution with parallel workstreams to optimize available space and reduce idle time.
Deployed two service teams working in coordinated shifts for up to 17 hours per day under strict project management.
Assigned a highly experienced crew with a proven track record and provided on-site supervision to ensure quality.
Rotated skilled teams and used specialized tools to safely move and reassemble heavy components.
Results That We Achieved
Completed the Clutch Marine Services in 40 days, followed by load trials and handover in 2 days, totaling 42 days and finishing ahead of the deadline.
Rig was deployed on time, helping the customer avoid a $4 million loss due to delay.
Achieved seamless coordination with no idle time or handling damage despite the constraints.
Strengthened customer trust and confidence in Neptunus as a reliable service partner.
