top of page

Marine Insurance Underwriting: What You Need to Know

  • Rohit Lokhande
  • Sep 23
  • 3 min read

Updated: Sep 27

Marine insurance underwriting process showing risk assessment, cargo ships, and global trade protection
Marine insurance underwriting process showing risk assessment, cargo ships, and global trade protection

Table of Contents


  • What Is Marine Insurance Underwriting?

  • Key Factors in Marine Underwriting

  • How Risk Factors Are Evaluated

  • The Underwriter's Role in Coverage

  • FAQs


What Is Marine Insurance Underwriting?


Underwriting simply means the process by which an insurer determines the risk associated with writing an insurance policy covering a specific asset, whether it be a vessel, cargo, or, business operation. For customers, the underwriting process establishes the ultimate premium you will pay as well as what the coverage will actually mean for you when you purchase your policy.


More specifically, the underwriter's role is to evaluate the risk of loss and establish pricing and capacity that is both fair to the insured and to the insurer. Underwriting is an essential step of every marine insurance policy.


Key Factors in Marine Underwriting


To assess risk, the underwriter examines a wide range of factors. These considerations come together to provide a complete picture of a situation that could lead to a claim.

  • Type and age of vessel: The construction, maintenance history, and age of a vessel are primary indicators of risk. A vessel that is new and equipped with the latest navigation systems is perceived to be less risky.


  • Shipping route and navigational area: The planned shipping route is extremely important. Shipping in an area that has a higher exposure to piracy, political instability, or adverse weather conditions is likely more risky, and these conditions may be reflected in the premium.


  • Cargo insured: The type of cargo being insured is also very important. Hazardous materials, perishables, or high value electronics could all require a different and specialized risk class with higher premiums due to increased risk for the carrier.


How Risk Factors Are Evaluated


When evaluating risk factors, underwriters do not look merely at a factor, they bring together a variety of resources to establish an all-encompassing risk profile. 


  • Technical Survey Reports: For a vessel, the underwriter looks at thorough survey reports of its condition and safety equipment. 

  • Historical Data: The vessel's, shipping company's, and nearby route's past claim history are examined to predict future behavior. 

  • Market Conditions: Indicators of worldwide economic conditions, new regulations, and changes in the geopolitical landscape are closely monitored since any of these can influence risk in a given region overnight. 


What the Underwriter Does Regarding Coverage


The marine underwriter is the final decision-maker. The underwriter does the following:


  • Evaluating the Risk: Estimating the likelihood and magnitude of possible loss. 

  • Calculating the Premium: Designing an appropriate premium based upon the risk-related issues of the risk profile.

  • Setting the Terms: Drafting the specification of terms, conditions, and limits of coverage under the policy. 

  • Building Relationships: Enhancing relationships with brokers and clients and developing individual understanding to help them with their individual needs and risks. 


This comprehensive process allows for every policy to be customized to its risk profile, while providing financial security.


FAQ's


What is the main task a marine underwriter has to complete? 

A marine underwriter's primary task is to analyze risk and determine the price and terms of coverage for a policy.


How does an underwriter calculate a marine insurance premium? 

An underwriter calculates a marine insurance premium using their assessment of all the risk factors of the vessel, cargo, and route taken.


Will the age of a vessel affect my marine insurance premium? 

Yes, older vessels are often classified as a higher risk which in turn could lead to a higher premium.


What is a survey report in this process?

A survey report is an inspection of the vessel's condition, which provides a primary source of information for the underwriter.


Is the risk in a cargo assessed differently than vessel risk?

Yes, the cargo risk is evaluated based on specific value, type, and susceptibility to damage while the vessel risk assessment is determined by its condition and operational characteristics.


By understanding the underwriting process, you can prepare for a more meaningful and productive conversation about your marine insurance with your broker/insurer. Once you know the underwriting aspects an underwriter will evaluate, you can better proactively anticipate future risk and work to get the most favorable marine insurance policy. 


Let's Connect

Marine Insurance Info

We provide comprehensive marine insurance information guidance and support.

Marine Insurance Logo

Copyright © 2025 by Marine Insurance Info | All Rights Reserved  ​

Quick Links

Home

About

Marine Insurance

Contact Us

Blog

FAQ's

Get Daily Marine Insurance Update

bottom of page