Bob's Tiki 46
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Bob's T46 p2
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Bob Kupp's Tiki 46 in Phuket 
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I had been looking for a pure cruising cat for several years and when I first saw a sketch of the TIKI 46 by James Wharram Designs in the UK I found many of the features I had in mind. Almost immediately I had ruined the sketch doodling various ideas I had for the boat. After waiting for 6 months to get the study plans from JWD’s U.S. agent I finally telephoned their UK office and was sent a set immediately. Liking what I saw I phoned Ann & Nev Clement who were building the prototype on a pig farm in Southwest England and arranged for a visit. They graciously put me up in their houseboat and allowed me full run of their 46 of which the hulls and pod were largely completed. John Barker, who at that time was working for JWD, was also there and after patiently answering my many questions sold me building plan set #3 then and there.

From there I flew directly to Phuket, Thailand, to inspect a boatyard called Seascape who were building two Tiki 38’s and a Tiki 26. The director is Gunter Nutt, a cabinet maker from Liechtenstein who has been building traditional craft here for 18 years, overseeing a crew of 9 Thai craftsmen. The workmanship appeared to be of high quality although I expressed, and still have, some reservations about the quality of materials used. Marine ply, along with a lot of other things, is not available here. The best grade exterior ply is used and Gunter assures me that they have tested it extensively. As the Clements discovered, even BSB certified wood is not always of high quality. The three Tikis built so far are doing well.  Well aware of these and other risks of poor legal infrastructure, vague tax laws, language barriers etc. I entered into an agreement for Seascape to build a Tiki 46 for me, and I will report my experiences and progress.

I will begin with a description of the port hull, but need to make two things clear. 1) Unlike most Wharram cats, this one is being professionally built. I quickly realized that the scope of this project was way beyond any skills I may have fantasized I had as a builder or designer, and my respect for those who do has greatly increased during the 10,000 plus man-hours that have gone into this project so far. 2) All of the modifications to the plans were ideas of mine, Gunters or other Wharram builders and were done without consultation or approval of JWD. I will attempt to report as honestly as possible if these design interpretations turn out to be “improvements”.

Also I want to thank Graham Tate, owner of Seascapebuilt Tiki 26 “Bear Necessities” for the use of his Olympus digital camera, which I will try to learn to use better. The major changes I wanted to make were with the interior arrangement and I changed the original 3 stateroom/2 head design into 2 stateroom/1 head. In the port hull this involved turning the head into a central companionway with a big wet hanging locker and then leading fore or aft into identical staterooms. There are no tanks, pumps, through hulls or anything else that makes noise or smells in this hull.
The first mod was of the lower hull where we rounded off the obtusely angled stem and made a shoe of 2mm stainless steel over the ply keel and skeg set with countersunk ss woodscrews and 3M 5200. This will be painted with wash primer and bottom paint but may not hold up well. The sea growth here loves exposed underwater stainless. Additionally we decided to permanently bond all the floors to the hull (except the one in the central companionway which has an access hatch) to effect a double bottom and add emergency flotation.

The aft stateroom was extensively modified by moving bulkhead #6 forward 200 mm to achieve the same space as in the forward stateroom. Next the berth was moved forward to bulkhead 7 and upper bulkhead 9.5 was made solid. This allows the berth to have decent width like the forward berth. A disadvantage is that it puts the entrance under the beam trough. Getting in is not as acrobatic as it appears, however, and once inside has a very spacious ambiance. There is an opening hatch over the head of each berth. The butterfly vents lead to the beam troughs and allow some fresh air to circulate even when all the hatches are closed.

Additionally, this mod allows for a separate, watertight compartment with deck access aft like the Tiki 38. Internally, the bunk level is continued aft all the way to the stern to form the floor of this locker, which is vented at floor level above the waterline. On the port side I will use this space for a stern anchor locker aft and fender stowage forward (of bulkhead #10). The hatch can be opened with the tiller amidships.

Both staterooms were identically modified from the plan in 3 major ways. First, an athwartship step/seat/locker was placed at the entrance to each berth. In the forward stateroom here, the battery bank goes under the berth and the inverter/charger into the seat. You can see the PVC pipe serving as conduits for all the wiring.

Second, a large hanging locker was installed inboard where the separate companionway came down in the original plan. The wet locker in the central companionway is located outboard opposite the stairs, which will later be veneered with the same wood used in the trim. Also lightweight, well ventilated privacy doors will be added.

Third, the plan vanity was replaced by a mini-desk/shelf system that is at an ergonomic height to be used from the step/seat. Any modifications to the plan furniture must be done with an eye to adequate reinforcement of the chain plates.

Finishing up the port hull is a shot of the sail locker located forward of the staterooms. Inside are hanging poles and a bracket to mount the 8hp dingy outboard. The hatch was made extra large to allow easier passage while carrying sailbags, motors etc. All the hatches except head, galley and central companionway were made hinging using the Wharram style lashing which I think is brilliant. The hatches are secured by 2 sliding bolts mounted centrally so that the hatch cannot be removed even if the lashings are cut. A dingy hatch under the lockable ss cover allows access to the bolts when locking is desired. The angled chock on the forward crossbeam is for a mooring bridle.

This page was last updated on 01-Apr-2001.

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