Steadfast Marine Svc Inc Return to Directory Rating (average): (0) Business Name: Steadfast Marine Svc Inc Business Genre: Contractor, Utility Business Website Address: steadfastmarine.com Business Address, City: PO Box 219, St Helena Island ZIP Code: 29920 Business Phone Number: 8438385285 Business Fax: 8438385638 Ratings There are no reviews yet. Please login to rate this listing. ▸▾ Claim Listing Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password? Reader Interactions Leave a Reply Cancel replyYou must be logged in to post a comment.