Sea Force IX: American-Built Custom Sportfishing Yachts
Founded in Palmetto, Florida by former charter captain Ron Rookstool, Sea Force IX designs and builds custom sportfishing yachts and superyacht tenders ranging from 41 to over 90 feet. Known for their monolithic hull construction and high-speed offshore performance, these yachts combine rugged capability with luxury-level finishes. Each vessel is fully tailored to the owner’s needs, offering advanced fishing systems, cutting-edge navigation technology, and spacious, hand-crafted interiors.
Home Yachts for Sale Sea Force IX
LOCATION: Coral Gables, Florida, United States
ASKING PRICE: $1,699,000 USD
LOCATION: Miami Beach, Florida, United States
ASKING PRICE: $1,797,000 USD
Sea Force IX Yachts
Founded by seasoned charter captain Ron Rookstool in Palmetto, Florida, Sea Force IX was established to deliver high-performance sportfishing yachts capable of serious offshore operation. The brand quickly earned a reputation for building rugged, elegant vessels with exceptional range, speed, and fishability—crafted entirely in the U.S. with a hands-on approach to quality control.
Takes a fully custom approach to yacht building, collaborating closely with each client to design every detail—from engine packages and layout configurations to interior finishes and electronics. Each vessel is engineered around the owner’s needs, whether for tournament sportfishing, extended cruising, or luxury tender service.
Signature builds include the Sea Force IX 94.5 Enclosed Bridge and a series of 81–91’ sportfish yachts known for their top-end speeds, custom tuna towers, and advanced systems integration. Many Sea Force IX owners are experienced yachtsmen who return to the yard for follow-up projects and long-term service support.
Yachts feature a proprietary monolithic hull design—vacuum-infused, vinylester GRP with a bonded stringer grid—offering exceptional structural integrity and a quiet, smooth ride offshore. The yard emphasizes weight balance, fuel efficiency, and long-range performance, incorporating modern composites while maintaining a focus on rugged, low-maintenance construction.
Based in Palmetto, Florida, Sea Force IX is a premium American yacht builder specializing in custom sportfishing and convertible yachts.
The yard is renowned for bespoke sportfishing vessels and yacht tenders built to each owner’s exact requirements—ranging from tournament rigs to luxury offshore cruisers.
Builds spanning from mid-40s to over 90 feet, including signature models like the 41.5 Sport, 82 Enclosed Bridge, and 94.5-foot flagship sportfish.
Their yachts feature deep-V, monolithic hulls vacuum-infused with advanced geometries that deliver exceptional ride comfort, stability, and offshore performance.
Constructed using 100% composite materials, high-grade vinylester resins, epoxy bonding, and foam-cored GRP, they IX delivers strong, lightweight, and quiet vessels.
Fully custom builds, owner consultations, sea trial support, and comprehensive service through its Florida build facility and aftermarket network.
Models and Specs
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