Boat Data

^{Dione IV anchored at bay ‘Ster Wen’, Belle Ile, France, July 2022}

Overview

Dione IV is a custom designed and built steel ketch-rigged pilot-house sailing yacht from Koopmans, the famous Dutch naval architects and yacht designers. She is unique in that the hull was designed by Dick Koopmans Sr. and the deck salon was designed by his son, Dick Jr. This was the first time they had done a collaborative design, normally they each did their own complete creations, and the result is a stunning, solid, and very comfortable cruising vessel.

Dione IV is suited for all latitudes with robust heating and a light airy pilot house deck salon for protection from the elements. She is also versatile for all waters, including very shallow places and drying out at low tide, with her swing (lifting) keel/centerboard.

General

Name	Dione IV
Design	Koopmans 40, design number 438, www.DickKoopmans.nl
Year	Hull: 1976, Upper Structure: 2003, Keel Laying: 2005
Flag	Netherlands
Home Port	Amsterdam
MMSI	244 05 99 81
Call Sign	PH6102
Ships Registry	10436ZA2005
Construction	Steel, round bilge; Steel 37, plane 6mm, hull 5mm, upper structure 4mm

Specifications

Length Overall	13,2m
Length Over Deck	12,4m
Length On Waterline	10,46m
Beam (width)	4,1m
Draft (depth)	Centerboard up: 1,3m; Centerboard down: 3m
Clearance (height)	17,2m
Tonnage (weight)	18 tons bare; 22 tons loaded
Ballast (weight for stability)	Lead, 5 tons, of which 700Kg in centerboard

Propulsion

Engine	Diesel – Mitsubishi S6S, 105 HP at 2500 revs (=max). Torque: 300nM at 1600 revs
Gearbox	Technodrive TM93
Propeller	4-blade, 24 inch
Hull Speed	7,5 knots
Cruising Speed	5 knots motoring with engine (2,5L/hr. fuel consumption)
Max Speed	9 knots (at 2500 revs
Bow Thruster	5,7kW, 7 HP, 150kgf thrust

Rigging/Sails

Main Sail	Ullman Sails (RSA) 31,15 m2, 3 reefs
Mizzen Sail	Ullman Sails (RSA) 16,80 m2, 2 reefs
Jib Sail	Ullman Sails (RSA) 15,2 m2 on furler
Yankee Sail	Ullman Sails (RSA) 38,7 m2 on furler
Gennaker Sail	De Vries Sails (NL) 122 m2

Energy Systems

Service Battery Bank	MG Lithium, LFP, 12v, 1050 Ah
Starter Battery	Lead/acid, 12v, 90 Ah
Emergency Batteries	2X Lead/acid, 12v, 90 Ah
Bow Thruster Battery	Lithium, LFP, 24v, 280 Ah
Inverter/charger	230v AC, 3000W / 12v DC, 120A
Solar Panels	1700 Wp
Wind Generator	12v, 600W
2nd Alternator on Engine	12v, 150A

Navigational Equipment

Autopilot Computer	Simrad
Autopilot Drive	Jefa DD1
Steering System	Jefa, rack & pinion
Navigation Computer	Yachtcontrol
Navigation Sensors	B&G / Simrad

Tankage

Main Diesel Tanks	2X 500l = 1000l
Day Tank – Diesel	60l
Fresh Water Tank	1050l
Black Water Tank (sewage)	200l

Ground Tackle (Anchoring) Equipment

Anchor	Delta, 25kg
Anchor Windlass (winch)	Muir HR2500, 12v, 1,2kW. Max load 1136kg
Anchor Chain	10mm, 100m