Bertram 42 Convertible

1976 Bertram 42 Convertible Sportfish — Technical Specifications DIMENSIONS & WEIGHTS

• LOA: 42 ft 6 in (approx.)

• Beam: 14 ft 10 in

• Draft: Approx. 4 ft

• Approx. Dry Weight: ~39,000–40,000 lbs (varies with equipment†)

†Note: weight can vary depending on refit condition, gear, fuel, water.

• Hull Type: Modified deep-V hull with hard chines

• Hull Material: Fiberglass reinforced plastic (FRP)

• Bottom Paint/Hull Inspection: June 2014

• Shaft Logs: New

• Cutlass Bearings: New

• Shaft Seals: Dripless

• Propellers: Four-blade, reconditioned

• Main Engines: Twin Detroit Diesel 6V92, turbocharged & aftercooled — rebuilt 2014

• Engine Configuration: Inboard diesel, shaft drive

• Reduction Gears: ZF Marine 2.0:1

• Electronic Engine Controls: New

Note: Actual performance depends on load, engine tuning, prop pitch, hull condition.

• Cruising Speed: ~20–23 knots ◆

• Top Speed: ~28–30+ knots ◆

  • Reports on similar 6V92 installations cite cruising 22–23 knots and top speeds near 30 knots.

• Fuel Type: Diesel

• Fuel Tank Capacity: (Verify with vessel owner/shipyard — not yet provided)

  • Typical Bertram 42 capacity range: ~450–720 gallons dependent on refit and tank configuration (two tanks common).

• Estimated Range: ~300–400 nautical miles (approximate) at cruising speed

  • Based on reported figures for similar Bertram 42 Convertibles (~400 miles) on appropriately sized tanks.

Fuel burn for Detroit 6V92 diesels varies with RPM and load:

• At hull-speed trolling (~7–8 kt): ~2.2–2.5 GPH per engine at idle/low load.

• Cruise RPM: ~40–50 GPH combined (approximate) under typical cruise conditions.

• At or near wide-open throttle: Higher burn expected but not well documented without sea trial data.

These figures are representative estimates based on owner forums and should be validated with sea trial and engine gauges.

• Generator: Westerbeke 15 kW

• AC Power: Standard distribution throughout vessel

• House Batteries: (3) Group 31 sealed (2014)

• Inverter: Outback VFX3524M

• Battery Charger: ProMariner ProTech 12.40 Plus

• Autopilot: Garmin GHC-10

• Radar: Furuno

• Depth Sounder: Furuno

• VHF Radio: Standard Horizon w/ AIS

• VHF Backup: Icom IC-M504

• Night Vision: Hot Eye Night Vision System

• Tank Monitoring: Series Tank Systems

• Cabin Joinery: Custom mahogany-finish cabinetry

• Interior Upgrades: New soft goods, headliner, and carpet

• Layout: Main salon with galley, forward and mid berths

• Galley:

  • 3-burner stove

  • Oven

  • Full refrigerator

• Life Jackets: (5) Type III, (3) Type I

• Throwable: Type IV ring buoy

• Fire Safety: Engine room fire suppression system

• Compass: Ritchie

• Anchor: 30 kg stainless Bruce anchor with chain and rode

• Bow Pulpit: Stainless steel

• Lifelines: Single-rail