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Product profile

Heavyfish

Heavyfish is Seasats’ launch-stage heavy-payload autonomous surface vessel for defence, security and survey missions. The hybrid-electric platform is speci...

Facts

Company
Seasats
Product type
usv
Status
announced
Primary capability
generalist
Website
https://www.seasats.com/

About Heavyfish

Heavyfish is Seasats’ larger hybrid-electric autonomous surface vessel, designed to carry up to 1,000 pounds of payload at speeds up to 12 knots. The approximately 9,000-pound platform is intended to remain deployed for as long as six months and can be launched from a vehicle or crane.

Mission configurations include radar, sonar, electronic equipment and other payloads for maritime-domain awareness, anti-submarine work, hydrographic survey, harbour security and high-value-unit escort. Heavyfish extends Seasats beyond its smaller solar-powered Lightfish architecture into higher-power defence and survey missions. The company expects to launch Heavyfish in 2026.

Market context

official product-page media matched to Heavyfish, https://www.seasats.com/, official_product_page_media, https://www.seasats.com/, Seasats Heavyfish official product-page media, 2026-06-05, clean_official_product_render

Summary

Type: USV

Core: Heavy payloads

Function: Maritime ISR

Audience: Defense

Specifications

deployment
vehicle or crane-assisted launch
endurance_months
Up to 6 months months
payload_capacity_kg
453.59 kg
top_speed_mps
6.17 m/s
weight_kg
4082.33 kg

Operations

Product detail
official product-page media matched to Heavyfish, https://www.seasats.com/, official_product_page_media, https://www.seasats.com/, Seasats Heavyfish official product-page media, 2026-06-05, clean_official_product_render

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