Omni-anchoring belt D4S
Figure 1. Omni anchoring belt D4S
Two hands for you, a omni-anchoring line for the boat
Sailors say: One hand for you, one for the boat. Pity: working, cooking, etc. are demanding when executed with one single hand.. However, if you don't hold yourself, the movements of the boat may transform you into a projectile.
The omni-anchoring belt line D4S can be secured almost anywhere aboard. It damps the shocks and preserves your stability while leaving your two hands free.
Functioning
A wide lumbar strap to distribute the efforts. The rear part of the belt is 50mm wide.
The stress is distributed on a wide surface in order to prevent pain and lesions.
An adjustable belt. The front part of the belt is a narrow strap (25mm) with a quick fastener.
The front part does not receive any stress, therefore it is narrow and light.
An elastic rope forming a loop to hold oneself and damp the shocks.
The high resistance elastic rope passes around or in a strong point (bar, mast, handle, shackle..) and is tied to a snaphook.
The elastic rope (at the front) and the lumbar strap (at the rear) form a loop that holds you in position.
An adjustable loop to tie yourself short. This allows for the best trade off between stability and freedom of movement.
The elastic rope is knotted every 20cm and the snaphook can be fixed anywhere along the rope.
Tied short, you are stuck to the strong point, the stability is maximal. Tied large, you have freedom of movement..
Figure 2. Omni anchoring belt D4S secured.
Figure 3. Omni anchoring belt D4S (model BA 2012 06)
Instructions for use
Placement. Snap the quick fastener, adjust the length, tie the free extremity of the strap (roll it and use the embedded scratch).
Figure 4. Install the belt (model BA 2012 06)
At rest. Fold the elastic line and tie it to the snaphook.
Figure 5. Fold the elastic line. Left: around the belt. Center: rolled (model BA 2012 06)
Secure yourself. Pass the elastic line around or in the strong point, clip the extremity in the snap hook.
Never use the belt in a different configuration. The safety (fastener, snaphook) could open alone.
Figure 6. How to secure yourself. Correct configuration, two dangerous configurations.
IMPORTANT. The omni-anchoring belt is not an anti-fall device. Use a tether, a harness and/or a life vest when there is a risk of falling overboard.
RĂ©sistance and elasticity
Polyester-Technora elastic rope 4mm diameter, doubled and knotted.
Rupture load: simple thread > 160kg, double thread, knotted > 300kg (measured on test bench), forming a loop > 600kg.
Overall static rupture load > 500kg.
All components (lumbar strap, polyester 50mm x 1mm, stainless steel rings 6mm, aluminium snaphook 8mm) have rupture loads above 500kg.
Controlled elasticity. The 4mm elastic rope has a relatively low elasticity (elongation ~ 50%)
A higher elongation would transform the belt into a slingshot.
A lower elongation would not damp the shocks, and there would be no freedom of movement.
Rupture load never reached in real situations, thanks to the elasticity of the rope.
The elasticity prevents the impacts. When the movements of the boat throw you out of balance, your velocity (cinetic energy) is slowed down progressively and there is no peak of force on the belt.
Validation
Use at sea. The device has been extensively used during a 7 months single-handed sailing to the Cape Horn and the Antarctic Peninsula. See Matxitxako Horn.
Standard model
Model BA
Unique size, waist between 60 cm and 120 cm.
Lumbar strap: length ~ 80 cm.
Elastic rope: length 140 cm.
Ultra light snap hook.
Total weight < 200 g.
Custom models on demand
Features
Lumbar strap (back)
Polyester strap 50 mm wide, 1 mm thick.
Size adjustment (front)
Unique size, waist circumference between 60 cm and 120 cm.
Fast clip made of polyamide, mounted on polyester strap 25 mm wide.
Free extremity of the strap rolled and held in position by means of a scratch.
Structural rings
Triangular, stainless steel AIS316, welded, 6 mm thick x 50 mm side.
Snaphook
Kong series 705.08, polished aluminium, 8mm thick, weight < 30 g.
Securing to belt: mounted on a triangular ring.
Rupture load >= 500 kg.
Anchoring line
Technora polyester elastic rope 4 mm diameter, doubled and knotted every 20 cm.
Length ~ 140 cm.
Securing to belt: triangular stainless steel ring (permanent point), snaphook (removable point)
Rupture load of line > 300 kg (rupture load of elastic rope > 160 kg), rupture load of anchoring loop (around/in a strong point) > 600 kg.
Length adjustment
By steps of 20 cm (clipping snap hook between the knots of the anchoring line).
Visibility
Reflective material SOLAS grade. Total surface 25 cm2.
Luminescent material long lifetime SOLAS grade. Total surface: 25 cm2.
Maintenance
Periodic maintenance: clear water, soft soap, 3-in-1 oil.
Environment
Reusable conditioning (used as belt pouch).
List of parts
Return to www.design4sea.com
Design 4 Sea is a registered trademark. Disclaimer, Terms of use, Credits and Copyrights
