Construction glue for boatbuilding?
 

http://personal.eunet.fi/pp/gsahv/glue/glue.htm

"Often it would be nice to be able to use a one component glue
directly from a caulking gun in a boatbuilding project.

The so called "construction glues" would seem to offer this
possibility. Usually they are claimed very strong, waterproof,
suitable for exterior use and, to some extent, solvent tolerant.

The following is a simple "semi scientific" test I've carried out on
several brands of these glues. "