On 4 May 2005 15:03:04 -0700, "Chris" wrote:

My cockpit lockers are connected with reinforced hose to the cockpit
drains also reinforced hose down to sea cocks of bronze.
The lockers are draining slowly years of small particle's I assume
building up in the hose. I've flushed with hose from the dock lots of
pressure but still slow going. Some Say Muriatic acid any suggestions
out there

Something I use occasionally for cleaning is dishwasher detergent.
It seems to contain some TSP. Disolve some in warm water, shut to
seacock, and let it stand in the line for an hour or two. Then rinse.
Back-flush if you can.
If the hose is several years old, I'd suggest replacing it during
your next haul-out.