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Your boat should reflect who you are: refined with a wild side. Polk Ultramarine is stylish, high-performance audio that takes your boat to the next level.

Featured Categories

Stereos

Speakers & Subwoofers

Amplifiers

Remotes

Amplifiers

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Free Shipping

We offer free shipping on all orders within the contiguous 48 states.

All orders subject to credit card approval. Free Shipping offer is valid only on standard shipping to the contiguous United States (We do not ship to Hawaii, Alaska, or countries outside the United States).
Additional charges will be applied for “2nd Day Air” and “Next Day Air” shipping options
All orders placed Monday to Thursday by 12PM Eastern Standard Time will ship the next business day if product is in stock.
Orders placed on Friday by 12PM Eastern Standard Time will ship Monday or the following business day.
No Saturday delivery available.
Offer Subject to change without notice.
We are closed the following days in 2020: January 1st, May 25th, July 3rd, September 7th, November 26th & 27th, December 24th & 25th, December 31st, and January 1st. Orders placed on those days will be processed on the following business day.