Water Ballast questions

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Cesar

Hunter Marine's Recommendation

Hunter recommends you haul the boat in freezing conditions. Because the fiberglass hull has a balsa wood core the ballast tank is insulated from the outside water temp. If the air temp drops below freezing the tank could freeze and crack, rendering the boat unusable. Re: odor control-- the general advice I've heard is to use fresh water w/ a cup or two bleach. I filled w/ salt water at low tide this past season and it became unbearable down below as the boat heels and rolls. An environmentally friendly trick was to top off the ballast tank, eliminating any smelly air-- kind of like the water trap in your home sinks and toilets. Best regards for the off-season!
 
C

Cesar

Hunter Marine's Recommendation

Hunter recommends you haul the boat in freezing conditions. Because the fiberglass hull has a balsa wood core the ballast tank is insulated from the outside water temp. If the air temp drops below freezing the tank could freeze and crack, rendering the boat unusable. Re: odor control-- the general advice I've heard is to use fresh water w/ a cup or two bleach. I filled w/ salt water at low tide this past season and it became unbearable down below as the boat heels and rolls. An environmentally friendly trick was to top off the ballast tank, eliminating any smelly air-- kind of like the water trap in your home sinks and toilets. Best regards for the off-season!
 
C

Cesar

Balsa Wood Core

Mark, The manual from my '95 Hunter 19 describes this. The same manual applies to the 23.5 and 26, which models are now named 240 and 260. The H19 was discontinued after '96, but I gotta believe hull construction for the 240 and 260 has remained basically the same. I quote from Section M. Water Ballast Tank Freezing: "Because the hulls are constructed with end grain balsa coring for stiffness, strength and lasting integrity, they also act as insulators. The temperature of the surrounding water will not (because of the insulating qualities of the balsa core) prevent the tank from freezing when air temperatures go below the freezing point." Anyway, I recall reading in other texts that they use thin sheets of balsa sandwiched between layers of fiberglass. Rgds, CJV
 
C

Cesar

Balsa Wood Core

Mark, The manual from my '95 Hunter 19 describes this. The same manual applies to the 23.5 and 26, which models are now named 240 and 260. The H19 was discontinued after '96, but I gotta believe hull construction for the 240 and 260 has remained basically the same. I quote from Section M. Water Ballast Tank Freezing: "Because the hulls are constructed with end grain balsa coring for stiffness, strength and lasting integrity, they also act as insulators. The temperature of the surrounding water will not (because of the insulating qualities of the balsa core) prevent the tank from freezing when air temperatures go below the freezing point." Anyway, I recall reading in other texts that they use thin sheets of balsa sandwiched between layers of fiberglass. Rgds, CJV
 
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Crazy Dave Condon

Ceasar is correct to some degree

There is some balsa core in the hull where the boats sit on the bunk boards of the trailer for rigidity. They use cross end grain and not the old straight grain. Any other questions Crazy Dave Condon
 
C

Crazy Dave Condon

Ceasar is correct to some degree

There is some balsa core in the hull where the boats sit on the bunk boards of the trailer for rigidity. They use cross end grain and not the old straight grain. Any other questions Crazy Dave Condon
 
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