Oceanographic Winches

1.5T Oceanographic Winches for Sonartech

In conjunction with Sonartech and BAE Systems Neumann Equipment developed and manufactured the Sonographic winches used on an Australian Navy vessel. Sonographic winches are a specialist piece of equipment used to deploy systems to conduct research and underwater exploration using sonar “tow fish” and remote operated vehicles (ROV’s).

These winches are subject to extreme offshore conditions and extraordinary fatigue loading due to constant heaving at sea. On average the wave period in open ocean is around 9 seconds. This means that every 9 seconds these winches can be expected to resist a fatigue loading event or load cycle.

Due to the high minimum bend radius of the coaxial communication winch rope these winches are designed generally with very large winch drum and sheave arrangements. Neumann Equipment understand the importance of carefully supporting and terminating the coaxial cables and have developed advanced methods of ensuring that the integrity of these cables is not compromised during termination.

Our custom Sonographic winches are not only built to endure the extreme environmental conditions but also comply with the relevant DNV offshore lifting (DNV-OS-H205) and Australian Winch & Hoists standards (AS 1418).

This specific winch was developed as a self-contained unit with integrated electro-hydraulic power and hydraulic control systems as well as distance and tension monitoring. Tension monitoring of these systems is critical due to the unknown nature of the sub-sea environment and considering that the equipment being used underwater is expensive to replace we do all that we can to ensure that equipment is protected and can be recovered if caught underwater.

Oceanographic Winch Specifications

Rated Line Pull 1,500kg
Mechanism Classification M7
Rated Line Pull Out of Water 600kg
Maximum Line Speed 65m/min
Bare Drum Diameter 460mm
Gearbox Ratio 47.6:1
Hydraulic Pressure 227 bar
Oil Flow Required 52 L/min
Cable Diameter 11.4mm Coax Cable
Drum Capacity 1,500m

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