I'm having difficulty googling what a "rescue rocket" is. I keep finding info on a video game and safety during space travel. What does "rocket" mean in a 1800s context?

I found this: https://museum.maritimearchaeologytrust.org/2025/05/29/rocke...

Is it a gunpowder rocket used to push a boat through the water instead of using rowing oars?

Is it just a gun that sends the carrying cable, what makes it different from any other gunpowder gun? https://www.britishpathe.com/asset/52937/

Of interest?

https://replay.bfi.org.uk/video/fbc58db0-b59f-5a31-9fda-1463...

https://www.vectisarchaeology.org.uk/pdfs/irex_wrecked_at_th...

Example: https://britishlistedbuildings.co.uk/300022782-rocket-cart-s...

https://maps.google.com/?q=51.5708572,-4.2850887

51°34'15.1"N 4°17'06.3"W

Have you tried the RNLI or lighthouses associations?