Technical Specifications: HYDRA

HYDRA is a high-performance Design Category A (Ocean) cruiser, engineered for elite stability and speed. Her polar data is calculated based on a maximum heel of 4.5°—the precise angle of Maximum Righting Moment (RM MAX)—ensuring peak safety in offshore conditions.

Performance Hull & Appendages

• Design Category: A (Open Ocean) for winds > Beaufort 8 and waves > 4m.

• Dimensions: LOA 13.30m (43'8") | Beam 7.25m | Mast Height 20.30m.

• High-Aspect Deep Keels: Unlike the shallow stubs found on standard cats, HYDRA features deep, high-aspect keels. This provides superior lift and allows for "pointability" as close as 30° AWA (Apparent Wind Angle).

• Precision Steering: Deep rudders placed directly aft of the propellers. This creates a "monohull-like" prop wash, providing active, tactile steering and exceptional maneuverability during docking.

• Hull DNA: Ultra-slim hulls with a high bridge-deck clearance to eliminate "pounding" in head seas and minimize drag.

Propulsion & Maneuvering

• Engines: 2x 50hp Volvo Penta

• Electronic Dual-Side Controls short hand docking from either helm.

• Folding Props: 3-blade folding propellers to minimize drag and maximize sailing VMG.

• Ground Tackle: 30kg Spade Anchor (The gold standard for ultimate holding power).

Sail Wardrobe

• Mainsail: 73 m² Full Batten.

• Headsail: 54 m² J1 Genoa (Significantly more powerful than standard self-tacking jibs).

• SA/D ratio: 26,3 with Main/J1 Genoa making Hydra a performance cruiser

• Downwind: 157 m² Furlström XL (Max AWS limit: 20 knots). Optional and only available for experienced skippers.

Off-Grid Systems

• Energy Storage: 30kWh Lithium Battery bank for silent, off-grid living.

• Power Management: 10kW Victron Quattro Inverter system.

• Essentials: High-output Water Maker, 2 Fridges, and 1 dedicated Freezer.

Performance Polar Curves

Table 1: HYDRA Standard Performance (estimated)

Standard setup: 54 m² J1 Genoa + 73 m² Mainsail. Use the AWS (Apparent Wind) for reefing triggers.

Table 2: HYDRA Furlström performance (estimated)

Light wind setup: 157 m² Furlström XL + 73 m² Mainsail. Strictly limited to 16 knots True Wind (TWS).

Electronic engine controls at both helms enable precise short-handed docking from both aft corners.

Performance Cruising

Effortless Docking

Slim hull design and superior pointability places Nautitech 44 Open amongst the best performance production cats.