Subsea Components

SMD Curvetech®

Curvetech® is SMD’s proven family of subsea components, engineered to deliver reliable power, control, and performance in the most demanding offshore environments. Backed by more than 20 years of continuous development, the range offers a complete suite of mission-critical systems including thrusters, motors, HPUs, compensators, and valve technologies. Curvetech is built around the principles of durability, serviceability, and consistent long-term operation. From lightweight, high-efficiency propulsion solutions to pressure-balanced hydraulic systems with advanced condition monitoring, every Curvetech® assembly is designed to reduce downtime, optimise vehicle capability, and extend operational life. Whether integrated into work-class ROVs or standalone subsea tooling, Curvetech® delivers the performance you trust when the challenge is deep and the margins are tight.

Curvetech Compensators

Engineered to maintain balance and protect critical systems, delivering consistent performance in the harshest subsea conditions.

Built from stainless steel and engineering plastics for high corrosion resistance, Curvetech® compensators use a rolling-diaphragm mechanism and tailored spring rates to transmit pressure changes smoothly and prevent leaks. With options for transducer-level monitoring, they provide remote visibility into fluid level and condition, allowing you to spot entrained dirt, air, or water and prevent consequential damage before it escalates.

Curvetech Thrusters

High-efficiency thrust delivering controlled, responsive manoeuvrability for every mission and environment.

With over 20 years of proven design, Curvetech® thrusters deliver high-efficiency propulsion with closely matched forward and reverse thrust. Available in a wide range of diameters (230–750mm) and motor configurations, they use lightweight aluminium and plastics where possible making them among the lightest in the market. Dual lip seals and optional speed sensors combine with a rugged build to ensure long life, high bollard pull, and excellent station-keeping even in strong currents.

Curvetech Hydraulic Power Units (HPU)

Smart, efficient hydraulic systems providing clean, consistent power to keep subsea operations running smoothly.

Curvetech submersible Hydraulic Power Units are engineered for long-term subsea performance, combining configurable pump options with compact, weight-optimised aluminium or stainless-steel designs. Featuring internal condition monitoring, 3kV HV windings, and external cooling ribs, these HPUs offer two decades of proven SMD design delivering power reliably to ROV propulsion, actuation, and fluid-pumping systems.

Curvetech Motors

Compact, robust electric motors built for dependable power delivery and long-life operation subsea.

Curvetech motors are engineered for subsea reliability, designed to integrate seamlessly into thrusters and hydraulic systems. With optimised displacement and torque characteristics, they deliver dependable, low-revving power to drive your vehicle or tooling systems under extreme conditions. Backed by decades of Curvetech heritage, they’re built to perform and last.

Curvetech Valve Tanks

Purpose-built to safeguard hydraulic flow, enhance reliability, and minimise downtime.

Curvetech valve tanks are precision-engineered to protect and regulate your hydraulic systems. Coupled with our compensators, these tanks help stabilise pressure, ensure clean fluid flow, and minimise downtime making them essential for robust, maintenance-friendly subsea operations.