Boat Weight

[TJ]

This is for all you CD30 owners out there. Just how close to the advertised 10,000 lb weight do the CD30s actually come. Anybody actually weigh their boats? Reason for asking is I looked at a boat (not heavily loaded) that supposedly weighs in at 12,000. Is this normal, or would it be a indicator of a hull that has absorbed a lot of water? No blisters though. Is a puzzlement! Happy to here from you CD30 sages. Thanks



tjsan@atlantic.net

[Will Parker]

I don't know the answer to your question, but according to Nigel Calder in his recent Cruising book, most builders have understated the actual weight of their boats. He has some complex (to the point of boring) discussion of the technical reasons for his opinions. I certainly respect his experience and knowledge.
But I don't know!
Will
"Jamabalaya"
CD 30

This is for all you CD30 owners out there. Just how close to the advertised 10,000 lb weight do the CD30s actually come. Anybody actually weigh their boats? Reason for asking is I looked at a boat (not heavily loaded) that supposedly weighs in at 12,000. Is this normal, or would it be a indicator of a hull that has absorbed a lot of water? No blisters though. Is a puzzlement! Happy to here from you CD30 sages. Thanks



whildenp@flinet.com

[Glen]

Tj:

I have a few comments on the subject:

1. How was the boat weight determined? Did the owner just say the boat weighed in at 12,000#? Did the lift operator say the boat FELT like 12,000#? Did the lift have a scale on it?

2. The only way to know the actual weight of the boat (ie hull #___) was to weigh that hull. When the boat was built fibergalss was cheep compaired ot QT durring construction. That is to say more glass was a good thing. After all, check this board and you will find many comments about Cape Dory's being overbuilt. We have a truck scake on site (we weigh up to 60,000#) and we weigh all boats and most of our fiberglass products. Weight is a big thing to us.

3. The differance in weight is about 2,000# or about 240 gallons of water. A 30' hull sucking up 240 gal. of watr would show some signs of it.

I could go on but space is not available. Good luck

Glen



glen@hobbymarine.com

[TJ]

Tj:

I have a few comments on the subject:

1. How was the boat weight determined? Did the owner just say the boat weighed in at 12,000#? Did the lift operator say the boat FELT like 12,000#? Did the lift have a scale on it?

2. The only way to know the actual weight of the boat (ie hull #___) was to weigh that hull. When the boat was built fibergalss was cheep compaired ot QT durring construction. That is to say more glass was a good thing. After all, check this board and you will find many comments about Cape Dory's being overbuilt. We have a truck scake on site (we weigh up to 60,000#) and we weigh all boats and most of our fiberglass products. Weight is a big thing to us.

3. The differance in weight is about 2,000# or about 240 gallons of water. A 30' hull sucking up 240 gal. of watr would show some signs of it.

I could go on but space is not available. Good luck

Glen

Thanks for your comments Glen. Boat was weighed on a lift with a scale. I think my question has been answered. TJ



tjsan@atlantic.net

[john doyle]

I don't know the answer to your question, but according to Nigel Calder in his recent Cruising book, most builders have understated the actual weight of their boats. He has some complex (to the point of boring) discussion of the technical reasons for his opinions. I certainly respect his experience and knowledge.
But I don't know!
Will
"Jamabalaya"
CD 30

This is for all you CD30 owners out there. Just how close to the advertised 10,000 lb weight do the CD30s actually come. Anybody actually weigh their boats? Reason for asking is I looked at a boat (not heavily loaded) that supposedly weighs in at 12,000. Is this normal, or would it be a indicator of a hull that has absorbed a lot of water? No blisters though. Is a puzzlement! Happy to here from you CD30 sages. Thanks

Displacement is not exactly weight. It is the amount of salt water that will be displaced by the weight of the boat. Boat builders specifications are for displacement.
John
CD31 #18 Bonnie Blue



redzeplin@yahoo.com

[Glen Snader]

What weighs more, 10,000 pounds of feathers or 10,000 pounds of lead?

The displacement of a boat is the weight. It is equal to the pounds of water displaced by the boat. It is true that salt water weighs more per gallon then fresh water, but in most cases, the differance in where the waterline sets is minimal. Physics 101.

Glen



glen@hobby marine.com