SOLAS Safety hooks


Our SOLAS Safety Products are well-known for their reliability, quality and competitive price point. Explore our range containing the HRU, PX series Release Hooks, Transceivers, Personal Protective Equipment, Pilot / Embarkation ladders and many more items. Would you like to receive our full catalog containing all of the individual SOLAS Safety Products we offer? No problem. You can browse our NEW IMO 2023 – 2024 catalog online by clicking the link on the homepage. When you prefer a physical copy, please contact us using our contact form and we will send you a catalog.

Hydrostatic release unit (HRU)

The Seamate Ve-1 Hydrostatic Release Unit or HRU is a pressure activated mechanism designed to automatically deploy that clears your life raft or EPIRB to float up to the surface. In the exceptional situation a vessel sinks, the HRU will activate and release the life raft or EPIRB on a depth between 1,5 and 4 meters.

The pressure of the water on the casing causes a knife to cut through a rope and thereby releasing the life raft. This same principle applies on the HRU for EPIRB’s, whereby the bracket which holds the EPIRB is released. The EPIRB model is delivered with the bolt and nut to connect the EPIRB to your vessel.

Hydrostatic Release Unit HRU

Technical data

  • Dimensions: 165 x 75 x 65 mm
  • Weight: Approx. 0,25 kg

SOLAS safety hooks Benefits & Features

The innovative design and the high quality of our HRU’s increased the reliability, which is why the SeaMate Ve-1 has an expiry life of 3 years and can be used in all weather conditions, from extreme heat to the polar environment. This means you only have to replace the HRU every 3 years, instead of 2 years which is the standard. Besides cost saving, 3 years expiry also reduces the environmental impact. We can provide you with five different HRU models, each with a different application. A basic model for 6 to 150 pax, a basic model for 1 to 12 pax, an EPIRB model, a remote released model and a combi model.

All HRU models have the same compact universal size to save space and are DNV and Wheelmark approved. The different HRU models do not require any maintenance, spare parts or separate service intervals. The product should only be replaced every 3 years during the standard service interval of the life raft or EPIRB. Because of the simple and quick assembly of the HRU, downtime on shore is reduced to an absolute minimum.

HRU Hooks

Signwell can supply you with various hooks which are -suitable for our HRU-models and are made out of seawater resistant SS316 Stainless Steel. They have a breaking strength that complies with the ISO regulations ISO6892. All hooks are packed in sets of 10 pieces.



The Liferaft / Rescue boat hook PX01 is a combined automatic release hook which can handle rescue boat and liferafts up to a safe working load of 35 kN. This hook can be used for rescue boats with a davit load less than 3500 kg and/or a davit launched liferaft up to 40 pax. The PX01 release hook has two modes of operation to allow for safe evacuation regardless of the conditions:

  1. Automatic release when the craft enters the water.
  2. Manual release when waterborne if auto-release
Liferaft _Rescue Boat Hook PX01

Technical data

  • Maximum SWL: 3500 kg
  • Material: Stainless steel 316 / Duplex
  • Service life: 5 years

Benefits & Features

The PX01 will increase safety, as the crew only need to familiarize themselves with one hook, instead of two. There is no second hook, dangerously swinging around when lowering. In distress situations the crew will instantly know which hook to use, as there is only one hook. The most economical SOLAS safety hooks, why buy two hooks if one is sufficient?


The Liferaft release hook PX02 is an automatic release hook for davit launched liferafts, which can handle a safe working load of 25 kN. The hook can be operated as an automatic release hook, releasing when the raft enters the water, or as a manual release hook.

Liferaft Release Hook PX02

Technical data

  • Maximum SWL: 2500 kg
  • Material: Stainless steel
  • Service life: 5 years


The SOLAS safety hooks, Rescue boat hook PX03 is a manual release hook for rescue boats, which can handle a safe working load of 15 kN. The hook is easy to operate/maintain and comes with a 5 year service life. The hook is designed to be opened manually and can be operated by one person. By pushing the release handle in the upward position, the hook will open.

Rescue Boat Release Hook PX03

Technical data

  • Maximum SWL: 1500 kg
  • Material: Stainless steel 316 / Duplex
  • Service life: 5 years

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