Sea Catch Hitch Pin Securement

To prevent the loss of the hitch pin, two methods of securing it to the release line are suggested as follows:

FIG. 1. The first option is to tie the hitch pin to the outer end of the release line.

FIG. 2. The second method is to secure the hitch pin at a point near the inner end of the release line as shown. This method not only provides hitch pin securement but may facilitate removal of the hitch pin at the time or release.

Sea Catch Over-Center Pressure Adjustment

FIG. 3. Ample material has been left at the tip of the movable jaw (see arrow) where the jaw and body come in contact. This aids in holding the device securely over-center in the locked position even when no load is applied to the device. It also helps prevent inadvertent release of the device.



What is Sea Catch made of?

All Sea Catch toggle releases and retrieving hooks are made from aerospace-grade PH15-5 stainless steel plate heat treated to 1025. See the certification page for more details.

How hard is it to manually release it under load?

Under capacity load of 7,000 lbs. the effort to release a TR7 is around 40 lbs. See the effort chart for other models.

Can I use a looped line instead of a shackle as the connected item to be released?

Yes, if precautions are taken to prevent line wear, such as adding protection to the line. See the Sea Catch "M" Series for units designed specifically for use with line or cable.

What is the Sea Catch used for?

Most are used in ROV (remote operated vehicles) and instrument deployment in ocean research operations. This is followed by uses in the offshore industry, seabed flowline installations, geophysical surveys and maritime uses including tug and tow applications, mooring deployment and port facilities. Next comes aerospace use in ground support equipment releasing, US Navy and US Coast Guard deployment of rescue boats. Commercial fishing applications follow with uses such as skiff releasing in purse seine operations (where the first Sea Catch was used). Then comes the testing industry where items are drop tested, followed by general consumer uses and object dropping in movie special effects. See the uses page for more details.