13012 Dykstra 62

General

Contacts

• client: Dick Alewijnse (NL) - DA is contactperson for all questions regarding systems
• project manager: Robin ten Hoope (NL) - RtH also drew up the interior since GDNP did not have time for it
• contact person GDNP: Erik Wassen (NL)

Trivia

• carbon mast costs about 250K which is more expensive than the interior (and the interior is more expensive than the aluminum construction)
• sistership 'Windhunter III' is build by Aluboot (Henk Borneman) and owned by Johan Mast
• ballast system with dumphatches is developed by Heine Deelstra from Gaastmeer Design, in cooperation with K&M Yachtbuilders

40 Construction

• frames will be all plate
• bulb profiles change into FB

60 Systems

General

• overboards - all above WL
• overboards - combine as much as possible
• valves - reduce number of valves where possible

Ballastsystem Windhunter

• • breather pipe must have sufficient diameter, Windhunter has Ø50 which is considered too small, they advice Ø80
  • breatherpipes go to grills in aftside doghouse
  • when breatherpipes overflow you know the tanks are full
  • Goiot hatches operation lines are lead to the cockpit and have a 2:1 tackle
  • Goiot hatcehs have a lever
  • double bottom is used as cross over, K&M is not satisfied with (hard to make watertight, no inspection possible) and prefers 2 or 3 large diameter pipes
  • Goiot deckhatch rectangular, for example 300x500 or 250x400, plexiglas replaced by aluminum panel
  • advantage of using standard deckhatch is that spareparts like gaskets can be easily found and replaced
  • Windhunter uses only ballastwater, we use a combination with grey water which gives smells so the breather pipe should be a closed ring?

Bilge

• manifold in galley (against trunk ER?), all manual valves well accessible

Fresh water

• reduce number of valves
• toilets possibly come with double connections for FW/seawater, no valve required (possible supplier is Raritan or Tecma)
• hydrofor - to be removable: valves before and aft

Sea water

• galley - own faucet, no connection to FW faucet

Black water

• breather aft in transom, forward in mast?

Fuel

• pump does not require electric valves fore and aft

Electric

• generator - Northern Lights? Wisperpower company is running into troubles?

Propulsion

• Steyr 4 or 6 cylinder
• check out if 26" prop can be combined with Twindisc gearbox, because of space issue, ER trunk might require modification, together with interior engine/shaft angles can be modified, keep 30% tipdistance for propellor, longitudinal position can be modified
• propellor
  • Flexofold 26" (optional 25" or 28", pending on engine and gearbox combination, issue is behaviour of sailing reverse)