Hauling and Blocking a Great Harbour 47

Hauling and Blocking a Great Harbour 47

Disclaimer – this has been written by Henry Dennig from comments I have collected from various owners.  I do not have any engineering background.  I would recommend anyone having their boat hauled and blocked, should discuss this event with Ken Fickett before having it done.  If you have any suggestions or comments on this post, please let me know – hjd

GH47sling

 

Hauling

When hauling a Great Harbour 47, the slings should be aligned with the internal structural walls.   The aft lifting point is salon/engine room wall, which is forward of the salon windows, and before the port light.

The forward lifting point is the forward berth wall.   Directly forward of the bathroom / office port light.  Below the pilot house doors.

Ideally the boat should be lifted with four lifting straps to spread the weight but can be lifted with a travel lift using two straps.

The boat does not have stabilizers, nor spray rails.

 

Blocking

The Great Harbour 47 does NOT have a keel.  The weight of the boat must be supported around the edge of the boat.   Each side of the boat should have five blocks/jack stands.  If jack stands are used, they must be chained.

A blocking under the transom and bow can be done after the sides are supported.

 

Photos of past hauling and blocking

GuietWaters

 

PhotoofS10inSlings1

Preferred lifting with four straps

Forward Straps

 

Forward Slings

Forward strap at the front of pilot house

Rear strap in front of ladder door

Aft Straps

Aft Slings

Front strap in front of salon window

Rear strap in front of engine exhaust

 

Bow thruster battery bank

Our bow thruster battery bank consists of two 12 volt AGM
start/deep-cycle batteries. Monitoring the charge state of the these
batteries under the bed is a pain in the neck. To ease the problem, I
recently made and installed a battery monitor such that the voltage
and charging current of each battery quickly can be monitored without
taking the mattress and hatch covers off. If anyone is interested in
installing one of these please contact me for details.

A related issue was the negative terminal on the port battery. This
terminal suffered a partial meltdown due to a loose connection in July
2010.  A repair allowed continued operation without battery
replacement. Unfortunately, during installation of the battery
monitor, a crack was observed across the face of the terminal. When I
wiggled it, the terminal broke off nearly flush with the top of the
case. Although the battery is old, considering the cost of a new
battery, a repair attempt seemed worthwhile. The repair worked – a new
terminal was successfully cast onto the old terminal stub. A load test
with the bow thruster confirmed that operation of the new terminal
under heavy load current is satisfactory. Please contact me if you
need details on the battery terminal repair procedure.

John Reynolds

Port Battery Terminal Batt Terminal Battery Monitor

GHTA Members in the News

Group says locks vital to Monongahela River
August 14, 2012
Associated Press

MORGANTOWN, W.Va. (AP) — Fred and Linda Mangelsdorf, the husband and wife captains of “Young America” both grew up landlocked in the Midwest — Fred in Illinois and Linda in South Dakota.
Recently they tried out their sea legs — or maybe that’s river legs — piloting their trawler on the Monongahela River.
Neither had to be sold on the idea of living on a boat basically full time after both retired, she said.
A trawler, both said, just made sense. It’s a livable boat that can navigate most waters. And the top cruising speed of 7 knots (around 8 mph) is perfect for people who aren’t in a hurry. It was Fred, in fact, who started thinking about the Mon River and the Mountain State.
“I said, ‘Hey, you can get to West Virginia by water,'” Fred remembers, musing over an old map of waterways. “Let’s go there.”
Barry Pallay likes that “Let’s go there” directive.
He’s an avid whitewater kayaker and vice president of the Upper Monongahela River Association, a nonprofit watchdog group that champions the Mon and its tributaries here.
In recent days, UMRA has watched the U.S. Army Corps of Engineers, which has floated the idea of limiting boat access or shuttering altogether select locks along the Mon — including the ones at Morgantown, and the Hildebrand and Opekiska lock systems downriver closer to Fairmont.
Should that happen, he said, there won’t be any return visits of for the Mangelsdorfs and other trawlers who enjoyed navigating the Monongahela River.
“This shows all the opportunity the river affords us,” he said. “It’s important for economic development and for the spirit of Morgantown.”
A West Virginia lawmaker on Capitol Hill agrees. Rep. David McKinley, R.-W.Va., whose 1st Congressional District covers a lot of areas the Mon flows through, urged federal engineers to not limit river traffic here. Doing so, he said would change the course of investment opportunities in the region’s energy and high-tech sectors.
Joe Pica just wants a chance to pat the Mothman’s behind in Point Pleasant.
“Yeah,” the retired Washington, D.C., cop said with a chuckle in Morgantown. “They’ve got a statue of him in town, and somebody was telling me you have to rub his butt for good luck. Couldn’t hurt.”
He’s going to visit the statue of the mythical creature because Point Pleasant is on the way. The town sits along the banks where the Kanawha River meets the Ohio. If there’s a river, he says, there’s a reason to go. And every river town, he says, has its own fun, little oddities — be it a Mothman statue or a Jell-O Museum or a courtyard that’s home to the World’s Ugliest Fountain.
“We love this stuff,” said Joe, who has been a full-time river cruiser since 2007. That’s when he turned in his shield and he and his wife, Kathy — everybody on the river calls her by her old childhood nickname, “Punk” — put their house up for sale so they could purchase their 30-foot trawler styled boat, the “Carolyn Ann.”
Now, they drop anchor wherever there’s a dock, and sometimes where there isn’t. At this particular stop along the Monongahela River in Morgantown, they were joined by two other kindred couples in this waking, floating dream.
Randy Semper, who grew up in Buffalo, N.Y., has been into boats for as long as he can remember. The 70-year-old spent his boyhood along the Erie Canal and bought a 16-foot roundabout when he and Barbara were newlyweds, 33 years ago.
The 37-foot “Lazy Dolphin,” with its fully equipped kitchen, computerized wheelhouse and other amenities, trumps that first one, the retired statistician with the U.S. Department of Agriculture said, smiling.
“Now, we just go where the water takes us,” Randy said.