Our Services


DIVING
Offshore Air Diving Services:
1. IRM for offshore structures and jackets
2. CALM /SPM & PLEM Installation and Maintenances
3. Subsea pipelines inspection and repair
4. Free span corrections and crossovers of subsea pipelines
5. Riser Installation, Pipe Laying & Cable Laying
6. Anode Installation & Replacement
7. Mooring chain Surveys
8. Splash Zone Repairs
9. Seabed Survey
10. U/W Welding & Cutting
11. Well Inspections/ Mud Line Survey
12. Marine Salvage
13. High Pressure Water Jetting for removal of marine growths
14. Oil booms installation for spill /environmental response
15. GVI and NDT of Rigs & Offshore Structures
16. Subsea NDT Such as Eddy Current , Flooded Member , UT thickness and Cathodic Protection.
17. Diving Project Management
18. Subsea installations, maintenance, repair, and intervention operations.
Inshore Diving and power plant Services:
1. Navigation Buoy Installation & Maintenance
2. Intake Pipeline inspection and Cleaning of Marine Growth
3. Inspection of gates and stop logs
4. Inspection, repair and Installation of Pipelines
Ship Husbandry & Inspection Services:
1. Under water inspections in-lieu of Dry-docking
2. CCTV Video Survey & Inspection
3. Hull Cleaning/ Propeller Polishing
4. Seachest Blanking
5. Cofferdam Installation
6. Tail Shaft & Rudder Pintle Clearance Reading
7. Propeller shaft wear down measurement
8. Propellers & Rudder damages assessment
9. Removal of entangled ropes & nets on Shaft & Propeller
10. Box cooler, Speed log and Echo sounder cleaning
11. Underwater Cutting & Welding Of Sacrificial Zinc Anodes


Rental Equipment:
Rental service to supports commercial, military, scientific, search/rescue/recovery and technical underwater diving markets in GCC.


VESSEL CHARTERING
SixAlliance purpose built Ultra Shallow "Fast Intervention Diving Vessel" comes fully equipped with on site decompression chamber, dive panel, breathing air quads plumbed to HP compressors below deck.
The vessel comes with an Autopilot system, Jib crane and A frame at the stern to support subsea survey & ROV operations.
To download the specification, click the link below
Additionally, we also have a complete HDPE Rhino boat with SRP plus a small craft for other diving scopes if required.



REMOTE OPERATED VEHICLES (ROV)
With our fleet of observation, inspection, and light work-class ROVs, we deliver tailor-made subsea solutions by efficiently combining our in-kingdom assets, all ready for immediate mobilization.
Our services include ROV-class approved UWILDs for operational rigs, construction support, comprehensive inspection survey of pipelines and seabeds and much more.
In addition, our in-house IMCA-certified diving team is readily available to assist with jack-up leg spud can access openings as part of UWILD operations, perform interventions in areas beyond ROV reach, or execute rapid recovery missions for ROVs in distress.
Our ROVs supporting Offshore energy (Oil - Gas - Wind), Maritime & Shipping, Search & Rescue, confined spaces.
Providing Visual inspection, NDT, bathymetric & Sonar imaging survey.
Copyright © 2025 Six Alliance Co. Ltd. All rights reserved.
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Contact Us
Phone
+966-53-202-5363
Offices
Singapore
352 Tanglin Road, #01-01 Singapore 247671
Tel: +65-9781-6786
Kingdom of Saudi Arabia
Road 114 Industrial Area No. 1
Al Jubail, Saudi Arabia 35717
Tel: +966-53-202-5363
