Cal 39 Mk II

• Fuel 50 gal
  “The 50 gallon steel fuel tank is located under the port settee” — owner's manual (Cal 392/393 (Perkins 4-108)), cal39.info · “a 45 gallon stainless diesel tank under the port one” — search excerpt, calsailors.com
  The builder's owner's manual for the Cal 39 (392 twin-cabin and 393 tri-cabin), hosted on the Cal 39 owners' site, gives 50 gal. That settles the 50 in a spec database versus 45 in Sailing Magazine; one owner's 45 gal stainless tank is probably a replacement.
• Water varies by year
  “110 gallons of fresh water are stored in two tanks; one under the starboard settee and the second under the cockpit sole” — owner's manual (Cal 392 twin-cabin), cal39.info · “A total of 120 gallons of fresh water is stored in two separate tanks, 60 gallons each.” — owner's manual (Cal 393 tri-cabin), cal39.info
  The owner's manual gives 110 gal for the twin-cabin 392 and 120 gal (two 60 gal tanks) for the tri-cabin 393. Our earlier figure of 90 gal, from a spec database and Wikipedia, matches neither layout.
• Holding 15 gal
  “the toilet discharges into a 15-gallon holding tank” — review, goodoldboat.com
  The 15 gal comes from Good Old Boat only. The owner's manual says the standard head was a recirculating chemical toilet (Coast Guard Type III) with deck discharge and waste-retention systems optional, so a holding tank wasn't standard on every boat.
• Water heater 6 gal · AC + engine · standard
  “The six gallon water heater is located under the cockpit sole just aft of the engine.” — owner's manual, cal39.info · “Hot-Water Heater (Standard on Cal 35 and 39; optional on Cal 31) The 6 gallon hot-water heater” — owner's manual, richardanderson.net
  Jensen Marine's Cal 392/393 owner's manual shows a 6 gal heater under the cockpit floor aft of the engine on both layout drawings, run from shore power (its own AC panel switch) or engine heat, and doesn't mark it optional as it does other items. The Bangor Punta Cal 31/35/39 manual calls it standard on the Cal 39, without saying which generation.

Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.

• Bow thruster unknown
  Both parts of the Jensen Marine owner's manual (Cal 392/393) are silent on thrusters; they are not option lists.
• Stern thruster not fitted
  Our earlier figure of none has no source, and nothing was found either way.
• Steering pedestal cable
  “Heavy duty linked chain and sprockets in the steering pedestal control the steering cables. The cables run to a metal sh” — owner's manual (1977-78), cal39.info · “Gear shift handle is located on the pedestal.” — owner's manual (1977-78), cal39.info
  The Cal Boats (Jensen Marine) Cal 392/393 manual describes pedestal wheel steering with chain, cables, sheave box and quadrant, plus an emergency tiller. It has a stock paragraph for boats fitted with a tiller, but the engine controls are on the pedestal, so the wheel was the normal fit. The pedestal maker isn't named.

Thrusters and steering are often replaced — check the units on your boat before ordering parts.