Monsun 31 specifications

(text partly from Hallberg-Rassy homepage, 2009)

Glassfibre reinforced plastic (GRP).
Colour : White, Jotun 200
Bottom International Hard antifouling Trilux over five layers of epoxy resin paint.
A little curiosity is that Isabell weighs not the 4500 kg that is on the specs, but her dry empty weight is 5870 kg, nearly 6 tonnes!!!
Fuel tank and floors moulded in GRP.
Ballast keel, iron, moulded in 40 mm GRP. Main bulkheads laminated to the hull on both sides.
Rudder blade in solid GRP. Rudder main piece 35mm bronze round stem. Heavy cast rudder fittings in bronze.
Hull and deck, with rudder and chain plates etc, are built under the supervision of Lloyds for hull moulding certificate Lloyds′ of London class A, open-ocean vessel.

GRP-sandwich construction with polyvinyl cellular plastic as core material for strength and insulation.
Colour: Ivory white, Jotun 332.
Hull and deck completely joined by overlapping GRP laminate. Bulwark formed in the deck and hull mouldings and fitted with a solid cappings in teak.
Handrails, cappings on cockpit coamings, companionway, hatchguides, sole and seats in cockpit are all in solid teak.
The deck has a moulded in, non-skid surface and is provided with four 1" scuppers, draining below water line to avoid discoloured topsides. No teak on deck.
Two 1.5" scuppers from the watertight and self draining cockpit empty directly into the sea.

Mast and boom in anodized light alloy profiles 178/115, and 137/100 by Seldén of Sweden (2005).
The mast is stepped on the cabin top, directly over solidly strengthened bulkhead.
Through boom reefing gear, two-step.
Boom vang Seldén hydraulic (2016).
Internal halyards in the mast.
Two Lewmar self-tailing halyard winches 210 mm, Lewmar 40 two speed, chrome (2020).
Deck light in mast front with LED floodlight (2018).
Double main sheet, 4 part with clam cleat 12 mm. Either side of the cockpit (2011).
Genoa sheets, braided terylene 14 mm.
Two adjustable track cars, including genoa blocks with spring fittings.
Head stay, top shrouds, double lower shrouds and aft stay in 6mm 1x19" stainless steel rigging wire, pressed end T terminals Seldén and 7x16" stainless turnbuckles, all replaced 2005 and aft stay 2020.
Jib and main halyards 4mm stainless wire with 14 mm terylene hauling ends.
Stainless steel chain plates.

Main sail: 19 m² (210 sq ft) 280gr/m², UK Syversen Sails (2006) full-batten model, cruising extra with double reefing points.
Roller Genoa jib 31 m² (340 sq ft) 250gr/m² UK Syversen Sails (2013).
Working jib 18m² (200sq ft) 280gr/m² Furlex fitted UK Syversen Sails (2006).
Spinnaker radial head 52 m² UK Syversen Sails (2003) 50gr/m² nylon Model HR312 Red, blue and white.

Isabell in a cove in the Stockholm Archipelago, Ägnö Napoleonviken. A popular place for pleasure boats, surrounded by sheer cliffs

A small but important detail on board, the original Lewmar 40 winches.