The New HydroStream HST

Legendary Performance. Modern Composite Construction.

The HydroStream HST returns — built the way it should be, with modern all-composite construction and the same proven hull design that made it a legend.

The HST’s 20-foot AT (Advanced Tunnel) trimaran hull has always occupied a unique space in performance boating. Originally designed for high speeds, exceptional cornering, and stability the HST always delivered. Those design goals haven't changed — and it didn’t need to. What has changed is how it’s built.

All-Composite Strength

The new HST is constructed entirely from modern composite materials. No wood. No structural core materials that absorb moisture over time. Just rigid, stable, long-lasting composite construction designed to maintain structural integrity for decades.

The result is a hull that is:

Lighter than the original, coming in at around 685 lbs (bare hull)
Structurally stronger and more rigid
No rotten core, floor, or stringers - ever
Built with modern lamination techniques

The design is classic HydroStream. The construction is thoroughly modern.

The HST Hull — Proven for Decades

The HST’s center pod and outer sponsons provide lift, stability, and predictable handling across a wide speed range. It accelerates hard, carries speed efficiently, and remains composed in rough conditions.

It’s equally at home:

Running triple-digit top-end setups
Pulling skiers and water sports
Cruising with confidence in open water

The personality that made the HST famous remains intact — responsive, fast, and remarkably stable for its size.

Built for the Next 50 Years

HydroStream is a legendary name in high-performance boating with a legacy spanning over 50 years. The new composite HST carries that legacy forward — preserving the iconic hull while upgrading the structure to modern standards.

The HydroStream HST is back — and built to last.

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