MarsKeel Naval Ballast
MarsKeel Technology, a Division of Mars Metal Company, has been creating solutions and supplying marine ballast for over 45 years to a wide range of vessels, including racing yachts, commercial boats, navy vessels, and autonomous watercraft.


MarsKeel provides tooling/mold design, lead casting, and select products in ferrous and non-ferrous materials. In addition, we offer full-service CNC machining and metal fabrication services.
Our team utilizes certified control processes and material traceability, working with naval architects, system engineers, and defence companies in strict confidentiality.
Custom Naval Products for Defence Supply Chains
We provide cast lead and machined lead ballast parts for naval contractors and shipyards. Capabilities include:
Custom Cast Ballast
The ballast is cast to the requirements of the customer, naval architect, and shipyard. Our casting capacity is from as small as 20 lbs. to over 150,000 lbs. in a single pour.
Custom Designed and Manufactured Parts
Mars Metal offers customers the added ability to design, engineer, and manufacture fittings or internal weldments, used with or cast into the ballast, to facilitate the movement and installation of the ballast in the vessel. We provide full engineering, weld specifications, certified welders, and weld inspection to ensure the highest quality.
We also offer the ability to design and create ballast that maintains its position in the vessel.
List of Associated Services
- Engineering and design
- Pattern and tooling manufacturing
- CNC Machining
- Lead casting
- Selected ferrous and non-ferrous castings
- Worldwide delivery
- Custom packaging designed to ensure safe delivery
Certifications & Security Compliance
Marswell Metal Industries continues to support Defence-Naval supply chains with security-aware and risk-aware manufacturing practices built around quality, control and accountability.
We offer or hold the following certifications and capabilities:
- ISO 9001 quality management
- CSA N299.3-16 certification
- Controlled Goods Program registration
- Material traceability (MTRs), with NDT where necessary
- Security and document control to suit customers’ needs
The combination of these processes offers our customers assurance that we meet or exceed their security and control requirements.
Speak With Marswell Metal Industries About Your Naval Requirements
Please contact us with any ballasting questions or projects. We will be more than happy to work through your questions and requirements with you. We offer complete project control through our management process, from first contact to conceptual drawings, tooling design, production, and the delivery of final parts, all based on your individual requirements.
Frequently Asked Questions About Naval Ballast
Does Marswell Metal Industries have experience working with Defence Department requirements?
Yes. Mars Metal has experience working with defence suppliers in Canada and other countries. We work through the different production and documentation requirements for each supplier.
Can Marswell Metal Industries manufacture custom components to specification?
Yes. Mars Metal manufactures engineered-to-order components based on customer specifications, including fabricated parts, machined components, counterweights, ballast and test weights.
What quality and compliance systems support production?
Mars Metal is ISO 9001 certified and registered with the Controlled Goods Program. Production is supported by document control, material traceability, and quality management processes.



