There are too many answers to the problem. Everything from shore power issues, "yours or the adjacent vessels" Discharge of electrical current from your battery charger or inverter. investigate the proper procedures for testing galvanic corrosion/electrolysis. Could it be the "service life of the valve" is at an end?
The seacock should always be open when the engine is run, regardless if it is cold. It can be a good idea to close the seacock, when the boat will be left unattended. This is insurance against hose or clamp failure...
I have a Stuart sea cock bronze with a nut that secures the on off valve spindle. This is fairly old fitted to me Sabre 27 built 1978. It is still in service and can be re-furbished if necessary.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern -EA--C-. That is, seven letter words with 2nd letter E and 3rd letter A and 6th letter C. In alphabetical order, they are: meacock peacock seacock seasick
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern S-ACO--. That is, seven letter words with 1st letter S and 3rd letter A and 4th letter C and 5th letter O. In alphabetical order, they are: seacock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern S-A-OC-. That is, seven letter words with 1st letter S and 3rd letter A and 5th letter O and 6th letter C. In alphabetical order, they are: seacock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern SEAC---. That is, seven letter words with 1st letter S and 2nd letter E and 3rd letter A and 4th letter C. In alphabetical order, they are: seacock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern --ACO-K. That is, seven letter words with 3rd letter A and 4th letter C and 5th letter O and 7th letter K. In alphabetical order, they are: meacock peacock seacock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 6 words with the pattern SE---C-. That is, seven letter words with 1st letter S and 2nd letter E and 6th letter C. In alphabetical order, they are: seacock seasick secrecy septics service setback
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern S-A--CK. That is, seven letter words with 1st letter S and 3rd letter A and 6th letter C and 7th letter K. In alphabetical order, they are: seacock seasick
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern SEA--C-. That is, seven letter words with 1st letter S and 2nd letter E and 3rd letter A and 6th letter C. In alphabetical order, they are: seacock seasick
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern -EAC--K. That is, seven letter words with 2nd letter E and 3rd letter A and 4th letter C and 7th letter K. In alphabetical order, they are: meacock peacock seacock
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern S-A-O-K. That is, seven letter words with 1st letter S and 3rd letter A and 5th letter O and 7th letter K. In alphabetical order, they are: seacock seafolk