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Slatts 22
Fulmar 19
Rave - foiler
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Member Focus - Greg
Jacobs
Note from the
Web Curator - For most folks one multihull is enough... but not for Greg Jacobs.
Greg has a collection of three (yes, three!) folding trimarans to keep him busy. When I
received the photo's to scan for the Members Gallery I recognized that these were unique
boats. I asked Greg for more information on each boat and also to share information
about his experience sailing with a physical disability. Greg's story is below.
Click on
any photo for a larger view. Use your browser "back" button to
return here.
by Greg Jacobs
Some day, I'll design and build the
perfect boat for my unusual requirements. I know several open minded designers including;
Don Martin, Jim Antrim, Kurt Hughes, John Marples and Ian Farrier and have discussed
disability and multihull issues with them. I know a paraplegic who built his own tri and
sailed it to Central America (Ron Gill) and another skiing injury quadriplegic who is the
Hobie dealer and Trapseat inventor in Redding, California (Mike Strahle). I am an active
lurker on the multihulls mail list and always enthusiastic about speed sailing. Many
people have asked about my sailing experiences as a disabled person. What follows is my
condensed version of the story that left me in a small part of a little segment of a tiny
minority as a multihull sailing, Macintosh using, spinal cord injured quadriplegic.
"Don't Call Me
Normal!"
A Hobie 16 my dad bought while I
was in high school caused my immediate conversion to multihulls without the usual time
served in monohulls. Landlocked colleges had limited appeal to me so I chose to pursue an
engineering education at the University of Washington in Seattle, in part due to its
proximity to good skiing and great sailing. As a starving student, I concocted several
deals to acquire a "B-Class" cat (B-Lion) and later a Sol-Cat 18 and sailed many
miles on Lake Washington. I twice cruised the coast of British Columbia during Summer
Breaks on a 30 foot monohull. In 1979, I was introduced to Windsurfing through the
University's ski club and was running a windsurfing school as a certified instructor a
couple months later. Teaching skiing in the winter and windsurfing in the summer paid for
my drug of choice; adrenaline. This enthusiasm was tempered with an analytical engineering
perspective with which I sought to develop better equipment for wind junkies.
Windsurfing technology was evolving
quickly at this time and I became a tester, team rider then designer for O'Brien
Sailboards. I sailed cats when the wind was below 15 and boards when above. While on a 3
month O'Brien promotion tour in a motor home and trailer containing 18 sailboards, we
stopped in the Dalles and Hood River, Oregon in the spring of 1982. We pulled out a couple
of shortboards and tore up the Columbia Gorge in 25 knot winds. My cats sat on the beach
most of that summer as I worked 4 ten hour days at O'Brien then sailed 3 intense days in
the Gorge each week. I pioneered sailing sites all along the Columbia River and spread the
word of this nirvana for those craving adrenaline. I soon felt at home in this extreme
environment through cautious experience. This endless summer was extended with drysuits
until snow was once again falling in the mountains. In November 1982, I went skiing
instead of sailing and ended up with a broken neck and a helicopter ride to a 6 month stay
in the hospital. Paralyzed from the armpits down, with limited use of my arms and little
hand function, the wind cravings remained strong but the means to satisfy them were not
apparent.
I was soon sailing my cat while
lying on the trampoline and was confronted with a whole new list of design challenges: how
to board from a wheelchair, how to reach and pull lines, how to become active ballast
without trapeezing, and capsize contingency planning. Sailboards and overcanvassed beach
cats were no longer appropriate for the limited physical capabilities I now possessed. A
short sail on a friend's Hobie 33 showed that sailing from a cockpit of a severely heeling
monohull introduced a whole new set of balance and interface problems. My solution evolved
in the form of plans for a 20' by 20' trimaran with a "B" class main hull and
sailboard amas. I needed to immerse myself in the expertise of other multihull
enthusiasts. I rejoined the Northwest Multihull Association and became editor of
newsletter and part of the original 3-meter group. Here was a group that could help me
create my dream boat.
| In rainy January, I made my usual pilgrimage to
the Seattle boat show and saw the Slatts 22, a hydrofoil-stabilized outrigger - a one-way
proa. Designed by an airplane/helicopter pilot with over 30 years of sailboat racing
experience, the Slatts-22 features true cockpit sailing: no hiking, heeling, weight
shifting, scurrying about during tacking... ideal for me?! . I took a test sail with the
very accommodating designer; John Slattebo who was willing to make any necessary
modifications. I bought boat number seven. The most unique aspect of this unusual boat is
the stabilizing foil that is controlled by a stick in the cockpit which is linked via push
rod and Morse cable. The hydrofoil is not only controlled from the cockpit, but you raise
and lower it from there too, with no more effort than pulling on a kick-up rudder cord. We
adapted the rudder to operate with simple levers/cables. The rig is based on that of a
Hobie 17 plus a roller furling jib, with an unusual mainsheet within easy reach from
either seat. The anti-heeling effect of the hydrofoil takes away the need to hike out, and
the Slatts-22 is about as fast as a Hobie16. It is rigged with the outrigger to starboard,
so on port tack, the smaller 14' hull is forced down into the water. Pulling back on the
stick makes the hydrofoil lift, thereby eliminating the ama's hull drag. On starboard
tack, the ama lifts but you keep the foil immersed by pushing on the stick to give it a
negative angle of incidence. The foil is very large (45" span) and most effective at
4 to 10 knots of boatspeed. At faster speeds a smaller foil would generate less drag and
ample lift. The hydrofoil is capable of about 800 pounds of lift, either up or down. When
you couple that with a 12-foot beam (and momentum, you get about 9,600 ft./lb. of
restoring torque, more than ample for the boat's 180ft2 of mainsail on a 27-foot mast.
Actively tending the foil control lever is an added chore that might be eliminated with
the addition of a surface sensor mechanism like Ketterman's Trifoiler or Bradfield's Rave.
This boat was stored in front of my condo on a hydraulic boat lift so it was easy to
transfer aboard directly into the seat as there is no aka on the port side. So I finally
had a boat which supplied the speed, stability, and with a few adaptations, a workable
control interface. |
|

Slatts 22

Another shot of the Slatts 22 at the dock.
|
This nearly ideal situation was
disrupted when I got married and moved to Chico, California for my wife's medical
practice. Sailing was 45 minutes away at Black Butte Lake where I now sailed the Slatts
from a trailer. This required a lot of patient assistance from a Tornado sailor who was
intrigued by my unique requirements and unconventional sailcraft. We experimented with a
giant spinnaker and broke the foil linkage but had no real problems. Rigging, launching
and driving to the lake left sailing sessions severely shortened so new hardware was
sought to optimize this new situation.
I discovered a F-9A was being constructed nearby
and thought my fighter pilot/engineer father would be interested. He was. He day-sailed it
from Channel Islands Harbor in Southern California for a couple years and now cruises
Puget Sound since his retirement. I sail on it occasionally but need a quick, smaller
craft to call my own.
I have sailed the Freedom 20 mono (SLOOOW!) and
have raced the Sunbird (slow but solo), Martin 16 (nice, but still a monohull) and Hobie16
Trapseat (very dependent on crew). I got a quick look at the Challenger tri at Lake Merit
in Oakland. I have raced many times in the Mobility Cup in Canada and the Hobie Trapseat
Nationals in California. All of these "disability solution boats" fall short of
my desires but allow great sailing experience to many with disabilities.
I was intrigued by the Fulmar 19 trimaran with
its tandem cockpit and test sailed it in 15 - 20 kts in Puget Sound. I bought this 19' by
11' folding tri and removed the peddle drive unit which I could not use. Soon I had
replaced the 80 sq. ft. lungstron rig with a 113 sq. ft. camber induced, monofilm
sailboard rig. This produced ample power in the light winds of Northern California but
necessitated a new Nacra rudder and centerboard work. Adding a traveler and removing the
trampolines finally made the boat a racer that could keep up with slower cats in light
air. After two seasons of racing, it was assigned an unexpectedly low handicap rating
partly because the unstayed rig allows deeper reaching angles than 3-wire rigs. Higher
winds cause the aluminum mast to bend off before the hulls are over-powered at about 14
kts boatspeed and the beach cats start to leave me behind. With the sail sheeted 2/3 and
the rudder 1/3 over, the boat will sail continuos circles without touching the controls. I
enjoy sailing and racing this boat solo but always with friends around in other boats in
case of unforeseen trouble.

Fulmar 19, "Tri Hard" under sail. Numerous modifications have been made to
this boat. |

Bow shot of the Fulmar 19. |

Fulmar 19 in its folded position. |
In 1997, we moved back to the Puget Sound Region
and bought a house on Dyes Inlet. The 16 foot tidal range presents a new challenge which I
have addressed with a marine railway. I have wrung most of the speed from the Fulmar and
think foam sandwich hulls, a nonfolding 14'+ beam and "A" class rig could be
combined to create my next dream boat. Except, I just could not resist the temptation of
the new Rave Hydrofoiler. So I bought a yellow one and set about adapting it for me. My
friends thought the name Rave N' Lunatic was quite appropriate.

Greg (left) watches as friends assist with the assembly and launch of
"Rave N' Lunatic" a Rave foiler trimaran. |

The "Rave N' Lunatic" floats just off the end of the marine
railway used to launch and retrieve the foiler. |
|