Jonmeri 48 Buyer's Guide
The Jonmeri 48 on the brokerage market is a pilothouse sloop designed by Jorma Nyman and built from 1988 onward, a serious cruising boat of about 47.6 feet overall with a 40-foot waterline and a displacement near 36,400 pounds. With a deep-draft fin keel of 8.4 feet or a shoal version at 5.9 feet, she appeals to buyers who want a protected pilothouse layout and passage-making capability rather than a minimal weekend coastal racer.
Layouts on the Used Market
Used examples typically show the standard aft cabin with a double berth to starboard and single to port plus an adjacent head, a main cabin with wrap-around dinette to port and longitudinal galley to starboard, and a forward stateroom with Pullman double to port. Alternative forward layouts seen on some boats add upper and lower berths and enclose the port double, or move the head aft and introduce a tight V-berth forward. A constant across layouts is that neither head has a shower stall, so buyers needing enclosed showers must plan a custom retrofit or look elsewhere.
Equipment and Common Upgrades
The auxiliary on these boats is the Volvo TMD31 diesel rated at 94 horsepower, a meaningful asset for a boat this size when maneuvering or motoring in light wind. Fuel capacity is about 158 gallons with 200 gallons of water, supporting distance cruising as found. Beyond the engine and tankage, the tall masthead sloop rig with cutter option, in-line shrouds, and babystay is the other consequential system: a buyer should confirm the inner forestay and babystay are intact if cutter sailing is intended. Other creature comforts vary by owner and are not assumed.
What to Inspect
The cockpit well is quite small and separated from the companionway by an extended bridgedeck, so check the bridgedeck coamings and companionway seals for water ingress paths where the small well meets the house. The pilothouse has good forward windows but no large windows aft; inspect the forward glazing and its frames for leaks since they are primary sightlines and structural openings. The mast pushed aft with in-line shrouds and babystay should be checked for chainplate and stay condition, as the cutter-capable rig depends on that arrangement.
Availability and Buyer's Takeaway
Regional availability is not specified here, so shop broadly. For a used Jonmeri 48, a buyer's short checklist: confirm which forward layout is fitted and whether the missing shower stalls are acceptable; verify the Volvo TMD31 runs well and tankage is sound; inspect pilothouse windows and bridgedeck seals; and assess rigging including the babystay and inner forestay. She is a capable pilothouse cruiser best matched to buyers prioritizing protected helm visibility and passage range over large aft windows or expansive cockpit space.
Price & volume trends
Monthly asking-price and listing-volume trends for the Jonmeri 48. The line shows the median ask each month; the bars show how many listings appeared.