J/70 Owner Guide
Page
© Copyright 2012, J Boats, Inc. All Rights Reserved
12
of the forepeak bulkhead) and a bowsprit seal floats between the bearings to prevent water migration
into cabin areas while sailing. An angled platform at the forward bulkhead pitches forward and down to
the stem at the bow of the boat with an overboard drain on the starboard side. This allows any residual
water that might collect from water pressure through the forward sprit bearing and/or rain or seawater
through the Harken jib furling system to drain overboard. This compartment is accessible through a
raised and sealed inspection cover from below decks. Bow sprit control line leads from the end of the
bowsprit to a block mounted to the forward bulkhead then aft to the ferruled hole through the cabin face
to starboard to the pole control cam cleat (see diagram).
Companionway Hardware
J/70 is designed with a hinged and gasketed companionway cover that is fully removable by sliding to
starboard once hinged to approximately30 degrees. It is equipped with a SS eye and locking hasp
mounted to the underside. There is also a companionway acrylic drop board provided with a sliding
barrel bolt and hasp eye. Finally there is a shock cord and hook assembly attached to the boat on the
starboard side in the vicinity of the companionway opening.
There are three positions designed for this system:
1)
Closed and locked, drop board in place
2)
Companionway covered: Cover installed, no drop board in place
3)
Companionway Open: Cover and drop board stored below
For the closed and locked position the drop board must be in place and the barrel bolt on the front side
locked into the side rail of the companionway to starboard. Then the companionway cover is installed
and hasp is mated with the drop board hasp eye and boat can then be locked.
For the covered position the cover should be installed to its hinges and the shock cord attached to the SS
eye mounted to the underside of the cover. This is designed to firmly hold the cover down while sailing.
The shock cord may need tension adjustment from time to time.
The open position is a simple matter of removing both the cover and the drop board and storing these
items securely below.
Outboard Engine Bracket
The standard J/70 outboard bracket is an aluminum fabrication mounted to the transom on the
starboard side with a UHMW block to accept typical small outboard motors. This bracket is engineered
for a reasonable size outboard not to exceed 4hp or 50lbs (23k).
Deck Hardware & Access Plates
The deck hardware of the J/70 includes a combination of bolt down and ship loose kits from Harken,
Ronstan, BSI Hatch, Garhauer stainless and White Water Marine. All deck hardware is carefully located to
provide for versatile operation of the boat and comfortable positioning of the crew. The deck mounted
items are installed through reinforced areas of the deck using suitable deck sealants and fasteners. It is
very important to plan carefully and take great care when mounting additional hardware* or drilling any
holes through the deck to both protect the watertight integrity of the deck and to not cause other
unintended issues down the road. Please refer to photos and diagrams included in this manual to
properly set up each piece of hardware. For the Harken tie-‐lite and loop blocks please refer directly to
Harken instructions for set-‐up and recommended knots. Access plates are installed at the aft end of the
cockpit to allow long-‐term management of deck hardware fasteners at the aft part of the boat.
* Be sure to consult the J/70 Class Rules prior to mounting new hardware, as in most cases, changing the
location of deck fittings is not permitted.
