Mainstay

The #1 Marine Assurance System

Mainstay simplifies the complexity of vessel vetting, compliance and terminal operations. Designed for charterers and energy companies, it brings clarity, control and confidence to every decision.

Trusted Worldwide

With over 7,000 users globally and more than 79,500 vessels screened every year, Mainstay is the number 1 marine assurance solution for energy leaders around the world.

Comprehensive Risk Management at Your Fingertips

Oceangoing, Inland & Offshore Vetting

Inspection Reviews

Fully Compatible with SIRE 2.0

Company Assessments & Audits

Port Clearance

Sanctions & Voyage Compliance

Emissions Monitoring

Terminal Operations & Efficiency

Predictive Analytics & Data Intelligence

Mainstay delivers industry-leading marine risk management for tankers, barges, offshore vessels and their operators. Built for energy companies and designed to evolve with your risk requirements, it ensures your vetting processes stay compliant, efficient and future-ready.

From vessel screening to terminal performance, Mainstay enables you to work faster, safer and smarter.

Managing Director, MIS Marine

Dominic McKnight Hardy

Vetting for You, Like You

Configurable vetting processes with flexible rule profiles, ready-to-use templates and streamlined workflows.

Mainstay puts you in control, with tools that support better, more efficient human decision-making - not replace it.

The system delivers timely, data-driven insights that empower your team to make more informed, confident choices at every step.

Utilise MIS prepared templates to minimise manual data entry and improve efficiency.

Quickly evaluate vessel compliance, detect potential risks and accelerate decision-making with streamlined processes.

Keep all stakeholders aligned with a single, unified system where everyone can access the latest information and updates.

Connect with existing systems and data sources to maintain consistency and eliminate data silos.

Ensure data security by granting tailored access permissions based on roles and responsibilities.

Generate powerful reports that translate your data into actionable intelligence, helping you track trends, monitor risk and meet internal and external reporting requirements with ease.

Stay informed with timely updates on critical compliance changes or risk factors.

Connect every step of your vetting and compliance process, from nomination and screening to reporting and audits, within a single unified system for maximum efficiency and consistency.

Everything You Need for Confident Vetting

Apply your entire vetting policy in a single click.

Mainstay delivers colour-coded risk status, instant decision-making, and always-on compliance monitoring.

Systematic Vetting Policy Application

Proactive Sanction Alerts

Full Compliance Tracking

Logged Communications with Third Parties

Secure, Audit-ready Logs

Role-based Access Control

Full Transparency and Data Ownership

Complete Single System Workflow

Regular System Updates and Development

Your Single Source of Vessel Intelligence

Mainstay seamlessly integrates with the industry's most reliable data sources, delivering timely insights to enhance vetting decisions for safer, more informed operations.

OCIMF

SIRE 2.0, SIRE, BIRE, OVID, TMSA, OVMSA, Particulars Questionnaires, Crew Matrix, Incidents, PSC Inspections, MTMSA and MTPQ.

S&P Global

Vessel details, ownership, PSC Inspections, casualty data.

USCG

Incidents, PSC Inspections, Vessel Details.

Global Sanctions

Proactive watchlist monitoring.

AIS Data

Vessel tracking and port call history.

Marine Data Hub

Seamless collaboration and communication across the marine and energy sectors.

One Platform. Built Around You

Modular Flexibility for Smarter Assurance

Mainstay is built on a modular foundation, giving you the flexibility to configure the system to the exact needs of your marine assurance operation. Whether you’re a one-person vetting team or a multi-national enterprise, our modular approach means you only use the features you need, with the freedom to scale as you grow.

This adaptability allows us to support a wide range of customers, from small, focused vetting teams to global charterers, without compromising on performance or usability.

Complete Confidence From the Very Begining

Enterprise-Grade Security. Built In.

Mainstay is built on a foundation of trust, with security and compliance at its core. The platform adheres to ISO 27001:2022 standards and is Cyber Essentials Plus certified, ensuring your data is protected to the highest industry benchmarks.

With robust encryption, audit-ready logging, role-based access controls and continuous monitoring, Mainstay safeguards sensitive information while supporting full transparency and accountability.

Guided Onboarding. Ongoing Support.

Getting started with Mainstay is simple. Our onboarding process is guided by experts who understand the marine assurance landscape, helping you get up and running quickly. Once live, you’ll have access to ongoing support from a responsive, specialist team dedicated to your long-term success.

Whether you're a new user or scaling your operations, we’re here to support every step of your journey.

Ready for Now. Prepared for What’s Next.

Mainstay isn’t just built to meet today’s standards - it’s built to stay ahead of them. Our in-house development team continuously refines and enhances the platform, responding to customer feedback, regulatory changes and emerging industry needs.

You benefit from regular updates, new features and performance improvements. Whether it’s adapting to a shifting compliance landscape or unlocking smarter ways to manage risk, Mainstay evolves to keep you future-ready.

Mainstay Features Check List

Features
End-to-end support for tankers, barges and offshore vetting
Integrated compliance with over 40 global sanctions databases
Dynamic mapping of vessel/operator relationships
Scalable from team-level to enterprise deployments
Modular by Design – Start with what you need, expand as your requirements grow
The "Golden Record" – one trusted source of truth
Customised business logic for smarter vetting
AI-powered insights for trend analysis and proactive risk management
Backed by a global Community of Best Practice

We’d love to understand your challenges

Let’s start the conversation

Whether you’d like to see Mainstay in action with a personalised demo, have a quick question, or want a full breakdown of features - we’re here to help.

Just fill out the form and one of our team will be in touch shortly.