Home |
Search |
Today's Posts |
#11
|
|||
|
|||
A question about boat weight and displacement
As far as I know displacement = weight. Certainly the weight of the boat
will displace the amount of water with that same weight (hence the term displacement). That said, for documentation purposes the Coast Guard refers to a tonnage (don't recall if they call it displacement) that relates only to boat volume, not the weight. Although not as common as a reference to cubic volume, calculating the weight of a vessel is an uncommon but still correct use for the term tonnage. When speaking of volume, gross tonnage is the total amount of space contained within the hull, divided into 100 cubic foot portions. Net tonnage is the total volume, less the space taken up by engines, generators, fuel tanks, etc. A boat with 1000 cubic feet of open area where cargo could, theoretically, be carried would be rated at 10 net tons. Would have nothing to do with that vessel weighing 20,000 pounds.......which unless by sheer happenstance it probably would not. Then it gets a bit trickier yet. In many cases a "ton" refers to a "long ton" of 2240 pounds. Undoubtedly some young woman once who got pretty drunk, was slurring her speech, and started fantasizing about looking for man who was a good kisser with a "long ton"...... have to wonder if she would have thought a long ton was so desirable if it came attached to a guy who weighed 2240 pounds. :-) |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Update on ICOM M-502 | General | |||
offshore fishing | General | |||
Boat Displacement | Boat Building |