Sentinel Maritime Safeguard & Inspection
Trust the Markey Machinery Sentinel team to inspect, repair, and certify your marine winches and deck machinery.
Marine winch inspection, inspection, repair, winch repair, winch inspection
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Sentinel Maritime Safeguard & Inspection

Sentinel Maritime Safeguard & Inspection by Markey Machinery Co. Compass Logo

Sentinel Maritime Safeguard & Inspection

Markey Sentinel surveyor inspecting lower deck machinery

What is Sentinel Maritime Safeguard & Inspection?

Our clients have come to expect the high quality and reliability of our custom winches and deck machinery. Now Markey Machinery offers the best in deck machinery inspections and repairs as well.


Markey works with your crew to quickly identify risk and bolsters your predictive maintenance program. The quantitative survey report provides the comprehensive information necessary to make informed decisions. These reports facilitate budgeting and planning for periodic dry dockings and overhauls. Your deck machinery is integral to your business or mission and you shouldn’t waste valuable time in port when you could be at sea. This is why it’s important your winch system or deck machinery is surveyed before embarking on an extended voyage.

Markey Sentinel inspection of a marine winch system

Experienced Marine Winch Inspectors

Our marine surveyors are heavily involved in the engineering and builds of our deck machinery. This makes them the ideal candidates to oversee the safety and maintenance of your winches and equipment. Our inspectors perform detailed surveys by combining thermal imaging technology, vibration analysis, and physical examinations of the equipment. When the equipment passes inspection, Markey Machinery issues a report that states the equipment is safe and in compliance with maritime law. This quantitative report is valuable for Coast Guard inspections. In the case that the Sentinel surveyors diagnose an issue, a parts estimate will be completed immediately. The quote will be completed as soon as possible to get your winch repaired and back on the job.

Official United States Coast Guard USCG Logo

Compliance With Maritime Law Regulations

OEM administered surveys and inspections enhance the safety, reliability, and ensure regulatory compliance of your winch system. The Markey Sentinel program complies with updated Coast Guard Subchapter M regulations by The United States Coast Guard regarding safety, proper equipment maintenance, and recordkeeping. Our team will make sure your winch or deck machinery is up to par for the Coast Guard and safe for your crew to operate.

Map with locations marked around the world available for Sentinel services

On-site & Remote Access Services

Field Service

No location is too remote for our marine surveyors and engineers. The Sentinel team will travel to your location to meticulously inspect and scrutinize your deck machinery to look for breaks or weaknesses. No need to come into port or dry dock for a winch inspection. For repairs, our team will work around the schedule of your vessel to bring your vessel into port or dry dock. This saves you time and money that your ship can be making out on the water.


Remote Access

Remote Access service allows our systems engineers to troubleshoot your control system from anywhere in the world. We can remote access your control system the same day you encounter a problem, saving you valuable time and money and preventing a costly trip back to port.

OEM Replacement Winch Parts at Markey Machinery Manufacturing Facility

OEM Replacement Parts

Quick access to spare parts is critical to any successful operation. We stock critical wear items and can quickly produce service parts regardless of the age of your winch. Markey Machinery Co. keeps detailed engineering records for virtually every winch or deck equipment item the company has ever built. Over the years, many electrical, hydraulic, and pneumatic product lines and components may become discontinued or obsolete. We actively identify reliable alternative components and suppliers to extend the life and functionality of your deck equipment.

Custom engineering consulting for every winch and deck machinery product

Engineering Consulting

Markey Machinery’s reputation is built upon decades of responsible, robust design practices. Leverage our engineering prowess to make your next winch or deck machinery build a success. Regardless of the age of your winch, Markey Machinery offers a broad range of consulting services, including vessel & equipment reconfigurations, winch modifications, adaptations, improvements, repowering, etc. Additionally, Markey Machinery can document and maintain equipment no longer supported by other OEMs. Markey can support your seasoned equipment: we frequently reevaluate drum charts, brake ratings, drum capacity, and other aspects of our winch systems.

Sentinel surveyor completing operational training on electrical controls of a Markey winch system.

Marine Winch Familiarization Training

The Sentinel Maritime Safeguard & Inspection team can provide on-site operational training for every marine winch we produce. Sentinel training reinforces your crew’s confidence in using your Markey deck machinery, further boosting the safety, efficiency, and reliability of your equipment. Sentinel training services help you manage the challenges of frequent crew changes experienced in the workboat and oceanographic domains. Our team can train your crew on winch controls, system familiarization, Markey Render/Recover® technology, basic maintenance and lubrication, warnings and lock-out procedures.

Markey building a custom OEM repair part in Seattle

Our Seattle Manufacturing Facility

We perform repair services at our fully outfitted factory in Seattle, Washington. Our winch manufacturing team can produce small and large replacement parts for every repair. We also provide spooling services, upgrades, and complete winch rebuilds and refurbishment.

Sentinel crew member fabricating a custom winch repair part

Sentinel Program Services

  • On-Site Surveys/Inspections
  • Remote Access Troubleshooting
  • Part Repair
  • Replacement Part Fabrication
  • Rebuilds
  • Refurbishment
  • Upgrades
  • General Engineering
  • Control Engineering
  • Mechanical Engineering
  • Winch Familiarization Training
Contact Us Today to find out what Markey Machinery can do for you.