Sea Force IX: American-Built Custom Sportfishing Yachts
Sea Force IX Yachts for Sale
Elite Performance & Monolithic Construction from Florida
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.
Current Sea Force IX Yacht Listings
LOCATION: Miami Beach, Florida, United States
ASKING PRICE: $1,797,000 USD
LOCATION: Coral Gables, Florida, United States
ASKING PRICE: $1,699,000 USD
Sea Force IX Yachts
About Sea Force IX Yachts
Legacy of Performance and Precision
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.
Tailored Design, Owner-Driven Execution
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.
Notable Builds and Custom Milestones
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.
Advanced Hull Technology and Build Integrity
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.
Sea Force IX at a Glance
country
Based in Palmetto, Florida, Sea Force IX is a premium American yacht builder specializing in custom sportfishing and convertible yachts.
Specialities
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.
Size Range
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.
Hull Configurations
Their yachts feature deep-V, monolithic hulls vacuum-infused with advanced geometries that deliver exceptional ride comfort, stability, and offshore performance.
Hull Materials
Constructed using 100% composite materials, high-grade vinylester resins, epoxy bonding, and foam-cored GRP, they IX delivers strong, lightweight, and quiet vessels.
Services
Fully custom builds, owner consultations, sea trial support, and comprehensive service through its Florida build facility and aftermarket network.
Models and Specs
Sea Force IX Models
Build Without Compromise.
At Worth Avenue Yachts, we turn visionary ideas into world-class yachts—crafted with precision, passion, and a commitment to your unique journey.
Contact Us
Get in Touch
Ready to bring your dream yacht to life? Get in touch with our new build specialists today and start your custom journey.
Crafted to the highest standards, chosen for their legacy.
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