General Specifications  & Hull Construction

“Vanda” was built in Hong Kong in 1975-8 by Supercraft Ltd. as a private yacht to be used by the yard’s owner. Originally named “Van Triumph”, the build was to plans approved for classification by American Bureau of Shipping, with Machinery Certificate, and she was kept in class until laid up in 1991. After being replaced by larger yacht, she was renamed, and maintained ashore at Supercraft yard in Hong Kong from 1991 until sold in 2003. Over a period of 9 months, under supervision of  new owner’s surveyor and engineer, the hull was stripped to bare wood and all wood, machinery and equipment examined and renewed (where necessary), before being re-launched  and recommissioned  in November, 2003. She sailed from Hong Kong via Hainan Island to Bangkok in March 2004.

 

The hull is constructed of Burmese teak (tectona grandis (verbacenea)), on yacal frames. Yacal is a termite resistant and very strong hardwood of the species hopea odorata (dipterocarpaceae). It is also known as “giam” in Malay, “thingyan” in Myanma, or “mai thakian” in Thailand (where it was used for the royal barges, each of which was dug out from a huge single trunk). Teak has a density of 650 kgs per cubic metre, and yacal 977 kgs per cubic metre.

 

HULL

Keel                        : 

11” width solid teak with 1½” outer keelson, yacal shoed with 3/8” stainless steel plate and with an additional 27” stainless steel skeg extending the full length of the keel

Hog                          :

20” x 7” yacal bolted with 1½”dia. stainless steel bolts to keel

Frames                    : 

10” x 4” yacal,  spacing 21” between centers,  but 18” in  Engine  Room  (between frames 23 and 39 inclusive) 

Planking Inner Skin:

Teak: 1”, fastened to frames with stainless steel bolts with layer of glass cloth and resin between inner and outer shell

Planking Outer Skin:

Teak: 1½” at sides, 2” on bottom with 4” x 9 gauge bronze wood screw fastening to inner skin and stainless steel bolts  to frames and  stringer

Engine Bed               :

7” yacal capped with 3/8” steel bearers set 32” apart

Bottom & Longitudinal     Stringers    :   

 

3” x 1½”  yacal

Spray Chine            :

4” x 2” yacal external along side chine with 6” x 4” internal longitudinal with 1½” chine brackets on frames

Trim plates               :

9” wide  Ό” stainless steel plate bracketed 6” above  chine extending 33’6” forward from transom

Anti-cavitation plate:

30” long shaped 3/8” stainless steel  plate full transom width

Rubbing strake          :          

8” x tapered 6” to 4” yacal, faced with  4” x 3/8”  stainless steel plate    

Watertight Bulkheads:

 (4)

Forward collision bulkhead: 3/8” steel with  3  watertight doors to 2 chain lockers and for forepeak access

 

Engine Room: Ό”  steel paneled bulkheads fore and aft with  watertight doors and separate insulating doors

 

Aft:  Ό” steel bulkhead forward of steering space, no door

 

DECK

Beams             :

6” x 4” yacal

Exterior main decking:         

2” teak laid over Ύ” marine plywood.

Upper boat decking        :  

1” teak over Ύ” marine ply

Diving  Platform         :          

1½” x 2” teak on braced stainless steel frames

 

SUPERSTRUCTURE

Frames           :          

6” x 3 ½” x 18 steel channels with 3” x 3” x Ό” reinforced steel angle bar

Side Wall                    :          

Ύ” marine plywood covered with 3/16” fibreglass sheathing

Wheelhouse Roof      :          

Ύ” marine plywood covered  with 3/16” fibreglass sheathing

Wheelhouse floor       :           

1 ½” teak  on Ύ” marine plywood

 

INTERNAL

Marine windows & portholes:

All custom made using 316 stainless steel by Supercraft (HK) Ltd

Side windows have detachable external stainless steel typhoon covers. Portholes below deck are 316 stainless steel, internal diameter 12 inches, flange O.D. 16 inches, thickness = 4 1/2 inches with internal stainless steel deadlight storm covers

Forward deck cabins have 11” internal diameter aluminium portholes 11 inches, flange O.D. 15 1/2 inches, thickness 700 mm with deadlights,  and sealed rectangular lights in bathrooms

Sump tanks

7 separate sump/lavatory tanks for sewage water

Water & fuel  tanks:

Custom made from 316 stainless steel with outer sheathing of fiberglass mat and resin

Fuel Capacity           :

Approx  24 tons (5,100 imperial gallons )

Fresh Water Capacity:

Approx 8 tons    (1,700 imperial gallons)

 

  Back to top