Our spacious and tranquil marina has 35 slips with water and electric connection that will accommodate boats from 12 feet to 50 feet. We improved our slips to accommodate cabin cruisers! 

Porthole Marina  

High quality boat repair and custom engine services on the Chain O'Lakes.  

Porthole Marina is located on the Grass Lake with the Chain O’Lakes access in Antioch, IL. Join us for the 2018 boating season and enjoy the most beautiful sunset on the Chain O'Lakes!  

Mason and Gabriela Aron have been running Porthole Marina for 15 years. Our #1 amenity is our helpful and friendly staff making your stay with us the best boating experience on the Chain. 


Slips and storage


we provide you with our top-quality, reliable winterization and storage services.

​​Reserve your slip

for the 2023 season