Underwater Hull Cleaning & Marine Diving Services in Indonesia

Underwater Hull Cleaning | Propeller Polishing | Underwater Inspection | Underwater Repair

About us

Your Reliable Partner in Indonesian Waters

PT Amanah Segara Abadi (ASA) is a privately-owned Indonesian company specializing in underwater hull cleaning, propeller polishing, and underwater inspection for vessels operating accross Indonesian waters.

Founded in 2018 and based in Semarang, ASA supports shipowners and operators with reliable in-water services accross major ports and anchorages in Indonesia. Our experienced diver teams ensure safe, efficient, and compliant underwater operations for bulk carriers, tankers, container vessels, and offshore units.

With over 50 years of combined operational experience, ASA delivers professional marine diving services with clear reporting, strong coordination, and consistent execution — helping vessels maintain performance and avoid unnecessary downtime, in line with international and Indonesian regulations.

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Our Services

At PT Amanah Segara Abadi (ASA) Marine Services, we provide a comprehensive range of marine solutions designed to meet your diverse needs.

  • Underwater Cleaning & Inspection: Complete underwater cleaning and inspection services, including UWILD (Underwater Inspection in Lieu of Dry-Docking) for both classified and non-classified vessels.
  • Hull Cleaning: Removes marine growth and fouling to reduce drag and improve fuel efficiency.
  • Propeller Polishing: Enhances propulsion performance and fuel economy through smooth blade surfaces.
  • Sea Chest & Equipment Cleaning: Clears marine debris from sea chests, echo sounders, and speed logs to maintain proper function.
  • Zinc Anode Installation: Provides corrosion protection for metal components through effective cathodic protection.
  • Underwater Welding: Carries out urgent structural repairs below the waterline without the need for dry-docking.
  • UWILD (Underwater Inspection in Lieu of Dry-Docking): Certified underwater inspections that fulfill classification society requirements without dry-docking.
  • Class-approved inspections for both IACS and non-class vessels.
  • Fully documented with certified divers and HD visuals.
  • HD Video/Photo Documentation: Delivers clear visuals of underwater conditions for records, reporting, and decision-making, performed by certified divers using Brush Kart & industry-standard equipment. Supporting ABS, BV, DNV, LR, NK, and other major classes.
  • Marine Surveys: Ensure your operations remain compliant, transparent, and cost-effective with our marine surveying expertise:
  • On-Hire & Off-Hire Surveys: Records vessel condition before and after charter to prevent disputes and ensure accountability.
  • Pre-Purchase Inspections: Offers detailed vessel assessments to support safe and informed acquisition decisions.
  • Bunker & Condition Surveys: Verifies onboard fuel quantity and overall vessel condition during transfer or handover.
  • Draft Surveys: Measures cargo quantity through vessel displacement calculations for accurate reporting.
  • Damage Assessments: Identifies and documents structural damage after incidents to guide insurance and repair decisions.
  • General Marine Consultancy: Provides professional guidance on vessel performance, compliance, or operational concerns.

  • Spare Parts Supply: Minimize downtime and keep your vessels running with our reliable spare part sourcing and delivery service:
  • Global Sourcing with Local Delivery: We work with trusted partners worldwide to ensure timely delivery of technical components across Indonesia.
  • Genuine and OEM-Equivalent Parts: We provide parts with full documentation to meet technical and regulatory standards.
  • Rapid Turnaround: Streamlined logistics and inventory tracking enable us to respond quickly to urgent requirements.
  • Vessel Husbandry: From port clearance to crew comfort, we handle essential logistics and port arrangements for your vessels:
  • Port & Customs Clearance Coordinationy: Handles administrative and regulatory processes to ensure smooth vessel entry and departure.
  • Fresh Water & Provision Supply: Delivers clean water, food, and ship stores directly to your vessel.
  • Waste Disposal & Sludge Removal: Facilitates safe and environmentally compliant waste management services.
  • Crew Change Assistance: Arranges seamless crew transfer, including meet & greet, immigration support, and transport.
  • Ticketing, Accommodation & Transportation: Organizes travel plans and lodging for sign-on/sign-off crew with flexibility and care.
  • Visa & Documentation Support: Ensures all crew members have the necessary permits and paperwork in order for smooth operations.
  • Grab Rental Services: Provides floating grab rentals for loading, unloading, or waste transfer tasks requiring bulk material handling in port areas.
  • Salvage Support: ASA provides rapid-response assistance for marine emergencies accross Indonesian waters:
  • Emergency recovery & towing
  • Wreck removal coordination
  • Subsea assessment & technical support
  • Liaison with port authorities and insurers

For tailored services or specific inquiries, please contact us to discuss your needs. We’re committed to effectiveness, efficiency, and adaptability to provide the best solutions for your marine operations.

Complete Coverage of Indonesia’s Maritime Zones

Underwater Hull Cleaning & Marine Diving Services in Indonesia

We operate across all Indonesian ports including:
Semarang (Tanjung Emas) | Surabaya (Tanjung Perak) | Belawan | Makassar | Jakarta (Tanjung Priok) | and more.

Why Choose Us?

Because your vessel can’t wait.

We know what matters at sea:
✅ Clean hulls before inspection
✅ Fast parts when systems fail
✅ Crew handled without drama
✅ Reports that don’t raise flags

At ASA Marine Services, we’ve built our reputation on fixing problems fast, clearly, and across all Indonesian ports. With 50+ years of combined experience, we know how to get your vessel what it needs, when it needs it.

What Makes Us Different?

➤ All Indonesia, All Covered
From Sabang to Merauke. One expert local team, full national reach.

➤ Tools That Do the Job
Brush Kart systems. HD video inspection. Class-ready documentation.

➤ Real-Time Communication
You’ll always know what’s done, what’s next, and where we stand.

➤ Compliance-Smart
From Australian biofouling to local quarantine rules, we’ve got you.

➤ No Hidden Surprises
Fair pricing. Clear scope. Honest work

Explore Our Solutions

Download ASA Company Profile

Company Profile