Sunday, October 7, 2018

Sportfisherman Cockpit

Kevin has completed the ducts under the cockpit sole and installed tanks, pipes, pumps, seacocks and control valves that are most easily done with plenty of access available. More buoyancy foam was added in the compartments that are to be sealed.
Ducts completed, tanks, pumps, pipes & fittings installed and foam flotation poured
Holding tank on the left, water tank on the right, strapped down. Between them is the diverter valve for the holding tank. The tanks can be removed through the hatch opening when needed.
Cockpit deck panels waiting to be installed. The curved one shows the underside of the aft panel in front of the curved transom. These aft compartments are all accessible through hatches or access covers, so they are fully painted for easy cleaning and to make it easier to see into them in bad light. The two small fittings close to the centre of this panel are LED light fittings to light the compartment when needed at night. The deck panels were all pre-glassed, top and bottom. prior to marking for paint.
Cockpit sole glued in. Joints between sheets and around perimeter will be filled and glassed over.
Looking aft from the cuddy cabin. With the deck sheets now fitted, the tops of the gutter frames are flush with the deck surface.
Work now going on is sanding the hull sides to fair them prior to glassing, which should be starting by next weekend.

This design is not yet on our website. To see our range of designs, go to our main website or our mobile website.

Monday, September 24, 2018

Deck & Sheer of 26ft Sportfisherman

There is still a lot of work going on under the wet deck of Kevin Agee's 26ft Sportfisherman project, before the deck skin can be glued down. The tanks are being prepared, with spigots and access openings installed in the right places, as well as neoprene pads to prevent chafe of the tanks. The seacocks are being installed, as well as pumps for fresh water, holding tank and bilge water. Also a bilge blower to keep the under-deck areas fresh and free of potentially explosive fumes. Openings through bulkheads for hoses and cables are being fitted with PVC 2-piece liners to eliminate chafe. All compartments that will not be sealed are also being painted with multiple coats of white epoxy paint for easy cleaning and to make it easier to see what is going on in there for maintenance or in an emergency. Trying to find a leaking fuel hose in a dark and dingy dungeon at sea is no time to be wishing that you had painted a bilge compartment.
Deck beams and hatch gutter frames have been glued in. Bilge compartments that won't be sealed have been painted white. The black areas in the compartment closest to the bottom of the photo are the bases of battery boxes.
Compartment with battery boxes. Pumps in easily-accessible places. The seacocks are also being installed in this compartment. The cable openings through the girders have PVC liners to prevent chafe of the cables.
So, what was I doing while Kevin has had his head in the bilges? I have been shaping the sheer. This is a fairly skilled way of converting expensive Douglas fir and cedar solid timber into chippings from a power plane, followed by wood shavings from a hand plane. The sheer clamp was laminated from Douglas fir before the cedar skin was glued onto the framing. The sheer clamp ended up rectangular in cross-section. It remains more-or-less rectangular for most of the hull length, where the hull and deck intersect at close to 90 degrees. As we work toward the bow this angle becomes progressively more acute, requiring trimming off the top surface until, close to the bow, the sheer clamp is nearly triangular in shape.

The rectangular sheer clamps as laminated into the bulkheads. They are square to the hull skin, so they twist a large amount in the flared part of hull.
Sheer clamps planed down to finish flush with the underside of the deck. At the sheer break the hull/deck intersection is close to 90 degrees, so the sheer clamp is nearly rectangular. Forward flare increases rapidly and the sheer clamp twists to follow the angle of the hull skin. The resulting taper on the inner face of the sheer clamp can be seen, becoming more triangular.

Sheer clamps before planing. Top of the forward bulkhead shows the line to which the top of the sheer clamp is to be planed.
Sheer clamp planed flush with top of the bulkhead. The score mark in the surface is a saw cut that was made into the sheer clamp as an extension of the bulkhead edge, to serve as a guide to get the planed surface correct.  Now the rectangular sheer clamp is almost triangular and the rest of the timber flew onto the shop floor.
Finished sheer, ready to receive the deck.
This design is not yet on our website. To see our available designs, go to our main website or our mobile website.

Friday, September 7, 2018

Deck Structure of 26ft Sportfisherman

The deck structure of Kevin Agee's 26ft sportfisherman is coming together. Last post about this project I showed the frames for the flush deck hatches. Now the drain spigots for the integral gutters have been added. They will be connected to tubes to drain overboard.
Completed hatch frame, with two drains fitted in the gutter on the right.
The two drain spigots, seen with the frame turned upside-down. The sloped bottom surface of the gutter removes unwanted weight from the frame and increases the bonding area where it contacts the beam ends
We cut all of the deck beams to length and dry-fitted them into the hull, then fine-tuned the hatch positions. The beams were then accurately cut to fit each hatch in its correct location. The outer ends of the beams are notched into a beam clamp on the hull and they have intermediate support from the hull girders, fitting into slots in the top edges of the girders.
Deck beams dry-fitted and trimmed for the hatch frames, ready for all to be glued in. The large opening that has no beams crossing it is where the fuel tank will be installed, with a screw-down flush access panel over it. The centre console will also be over this area.
Same stage, looking aft from the cuddy cabin toward the transom.
This design is not on our website yet because the drawings are incomplete. To see our range of designs, go to our main website or our mobile website.


Wednesday, September 5, 2018

Proven DH550 Cruising Catamaran For Sale


The DH550 "Friends Forever" was built by a team of very accomplished professional boatbuilders on a farm in wine country, outside of Cape Town, South Africa. One of the leaders of this team is also co-owner of this beautiful boat and is a very experienced sailor, having competed in the 1994/5 BOC Challenge single-handed around the world race. This he did on a boat that he knew intimately, having been the leader of the team that built it for legendary single-handed racing yachtsman, "Biltong" Bertie Reed, for a previous version of the same race.
DH550 "Friends Forever", doing sea trials on Table Bay soon after launch.
Sailing Southern Africa magazine published an article about her soon after launch. "Friends Forever" has been well-proven since her launch in May 2016. She did her sea trials on Table Bay before heading off cruising. She has crossings of both the South and North Atlantic under her keels, separated by cruising the Caribbean, then extensive cruising in the Mediterranean, ending in Greece. She is now on the market because her other co-owner needs to sell.

She is laid out with a large owner's suite in the port hull, with a utility area forward of that for equipment, storage and an extra single berth. This hull can be closed off from the rest of the boat by a privacy sliding door separating it from the bridgedeck accommodation. She has two double cabins with shared heads and shower in the starboard hull. View a PDF with full description of her accommodation and specification. With that information in your hands, I will let photos speak for her.
"Friends Forever" cruising the Mediterranean Sea.
Diagonal view of saloon, looking forward. Galley and dinette to port, navigation and lounge area to starboard. Helm with engine controls on centreline. There is a second helm in the forward cockpit, mounted on the same shaft.

Opposite view of saloon, looking from the galley.
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Saloon, looking aft.
Aft double berth.
Port heads.
Port heads and shower.
Forward double berth, starboard hull.
Bow storage area
Engine under aft berth.
Forward (working) cockpit, with helm, all sail controls and a liferaft.
View from forward cockpit.
The forward cockpit is well protected from rough seas.
Aft cockpit, able to be completely screened off.
Cabin roof, with solar panels
Asking price for "Friends Forever" is US$1.1 million. If you would like more information about her, please email me and I will connect you with the owner.

To see more of this and our other designs, go to our main website or our mobile website.

Wednesday, August 29, 2018

Installing Services in the 26ft Sportfisherman

When building a boat there is a lot of effort that goes into parts of the boat that will be hidden and hopefully never seen again. Nevertheless, that hidden work has to be carefully planned and executed if there are not to be problems further into the project or, worse still, after the boat is launched.

Kevin Agee is in that stage of his 26ft Sportfisherman build. It would feel good to lay the deck and see what would seem to be another big step forward. But that would be jumping the gun. Before that can be done all of the hardware under the deck must be installed. That includes fuel, water and waste tanks, piping, valves, skin fittings, pumps, bilge blowers and the solvent-glued PVC ducting to carry hoses, electrics and engine controls.
Looking forward from the transom. PVC ducting to carry hoses, electrical cables and engine controls, installed through bulkheads and girders. The platform at the front end of the compartment in the foreground is for the batteries. The fuel tank will go into the next compartment forward and the water and waste tanks will be forward of that. The ducts that turn up against the hull sides will carry fuel filler, vent pipes and wash-down piping.
Looking aft from the front of the cockpit. The water and waste tanks are in the foreground. The next compartment is for the fuel tank. These tank compartments have plywood bottom panels, with voids beneath that form a tunnel for bilge water to run aft to the bilge pumps. All of these compartments and the tunnel under the tanks have been thoroughly protected from moisture by glass/epoxy laminates.
Preparations inside the outboard engine bracket for cables, engine controls and fuel lines. These compartments will be accessible through flush plastic access covers through the aft platform.
Well-planned access to these under-deck areas is important for later removal of tanks if needed and for reaching seacocks, pumps etc. The choices are to fit commercial hatches or make them from scratch. Whichever choice is made, the hatches need to be flush, or nearly so, or people will be tripping over them and at risk of injury.
One of the hatch gutter frames for a flush hatch. The rebate around the outer edge will receive the edge of the plywood deck, with the frame finishing flush. The gutters will drain into pipes that discharge overboard.
Bottom view of the gutter frame. The splayed face was cut on a table saw to remove unneeded timber to reduce weight. The dowels across the corners pass through the glued joints to introduce cross-grain for strength and long-term durability. The dowels will be trimmed off flush.
Another view of a finished gutter frame
This design is not on our website yet. To see our other designs, go to our main website or our mobile website.

Friday, August 17, 2018

Update on 50ft Catamaran in North Carolina

I visited the 50ft catamaran build by CRW-Con in Edenton, North Carolina last week. The first hull has been turned over and work has started on the second hull. The photos and captions tell the story.
Outboard view of the port hull. The hull has been sheathed with a layer of 1708 glass, then faired.
Inboard view of the starboard hull. The bulkhead horns projecting from the hull are for scarphing to the bridgedeck bulkheads.
Bow view. To the right is the long spar table for scarphing timbers into the hull-lengths needed to install in one piece.
Stern view, with the boarding steps taking shape. Rudder and P-bracket already installed.
Bulkheads being set up on the stocks for the starboard hull
View looking forward inside the hull.
Looking aft.
Cruising keel.
Composite chainplate being formed on plywood panel. This is the first panel that will be fitted onto the hull framing, then the others will be fitted working toward bow and stern. 
Close-up of the incomplete composite chainplate. The carbon spreads the loads down into the hull skin and structure and the shrouds are attached in the gaps with soft lashings. 
Faired-in opening for flush-fitting porthole.
Formed opening for flush-fitting escape hatch, The boxing over it is part of the 45 degree splayed panel that will connect the underside of the bridgedeck with the inboard hull side.
This boat is a modified version of out Dix 470 radius chine plywood catamaran design, stretched to 50ft. Both are sisters to the DH550.

To see our full range of designs go to our main website or our mobile website.