For some reason, the fairly extensive white caps didn't show up,
and I apologize for the wind-in-mike effect.
If a pitcha's worth a thousand words, how much fer a movin' pitcha?
A Look at Box Barge/Scow Sailing
If one were to go looking for some video of cruising-sized, box-barge/scows under sail... well... it's thin pickin's.
Despite the fact that sailing barges and scows once carried a good deal of freight in Europe and North America, very little information as to how they sail is readily accessible (okay... google, right?). One can only infer that their numbers prove they must have been able to compete against curvy dog rivals.
We had extensively sailed LUNA, a fine sailing hull modeled on Phil Bolger's AS29. It's a square sharpie... much like a barge, but with ends pinched in. It's full rocker sets it off from the large, mid-ships deadflat that help keep Triloboats relatively quick and easy to build, and was a common feature of the sailing barge/scows of yore.
We reasoned that the barge/scow form couldn't lag too far behind. But as a precaution, we built SLACKTIDE as a proof-of-concept before committing to WAYWARD, a full-sized liveaboard cruiser. After all, sailing engineless in SE Alaska, ya need to be able to get out of yer own way!
To make a long story short, box barge/scows sail reasonably well. We've had no problems going anywhere we wish, and that involves many places and situations most wouldn't care to take their sailing home, no matter its capabilities.
Things I note about box barge/scow hulls:
- Heeled, they present a V to the water.
- Upright, their entry is rather fine (directing water downward for lift, rather than parting to either side... this is true even with relatively abrupt bow curve).
- Easier aft curves release water well and make for an easier driven hull.
- More abrupt forward curves don't seem to hurt, and do seem to reduce pounding.
The videos embedded here allow a look at how three models sail. Cast of Characters as follows:
SLACKTIDE (26x7x1) is a Triloboat Junk cat-Ketch with rather abrupt end-curves, intended to prioritize carrying capacity over speed.
SPIRIT (36x12x?ft) is a Civil War Cargo Scow gone Blockade Enforcer, with easy lines prioritizing speed.
ALMA (60x22x4 is a San Francisco Hay Scow Schooner. Her lines are quite abrupt with a long deadflat, prioritizing heavy lading.
So here ya go... a movin' pitcha look at box barges under sail: