1939 Mathis Trumpy 91'

27.74 m
$ 1,695,000 USD
55 America's Cup Avenue, , 02840USNewport RI 02840 US
Yachtr

1939 Mathis Trumpy 91' Trumpy Fantail Houseboat

Jacksonville, Florida, United States
In Stock #2851016

1939 Mathis Trumpy Trumpy Fantail Houseboat

Refit Year: 2007

91' (27.74 m) INNISFAIL

INNISFAIL is a beautifully maintained 1939 Mathis-Trumpy 91’ fantail motor yacht with a desirable galley-up layout, rich presidential and World War II history, expansive accommodations, and an exceptional pedigree rarely found in today’s classic yacht market.

Flag of Registry: United States

Jacksonville, Florida, United States
   Vessel ID: 2851016
FEATURES:
   Classic American fantail motor yacht
   World War II Veteran and used by numerous U.S. Presidents
   Large aft deck and enormous salon
   3 Owner and guest ensuite staterooms
   USCG-Inspected for 65 passengers

1939 Mathis Trumpy 91' Trumpy Fantail Houseboat

Jacksonville, Florida, United States
In Stock #2851016

$ 1,695,000 USD

$ 2,347,130 CAD*
1,458,542 Euros*
£ 1,263,586 GBP*
*estimated foreign exchange

Description

INNISFAIL is an exceptional Mathis-Trumpy fantail motor yacht with the coveted “galley-up” layout and an extraordinary American pedigree. Built in 1939 for Joseph Cudahy of Illinois, she was later commissioned into U.S. Navy service during World War II before returning to private ownership and hosting several United States Presidents throughout her distinguished history.

Her well-conceived arrangement includes a forward wheelhouse, full-beam galley, expansive salon, full-beam master stateroom with offset queen berth, two ensuite guest staterooms, and a spacious fantail aft deck that may be enjoyed open or enclosed. Beautifully maintained throughout her life, INNISFAIL presents in outstanding condition and reflects an exceptional standard of stewardship.

LOA91'

LOA27.74''

Beam18'

Draft Max Feet5'

Draft Min Feet5'

Bridge Clearance Feet20'

Fuel Tank (Gallons)1100

Fuel Tank (Liters)4163.95

Fresh Water (Gallons)1200

Fresh Water (Liters)4542.49

Holding Tank (Gallons)100

Holding Tank (Liters)378.54

TypePower

ConditionUsed

Specifications

Name

INNISFAIL

Power-Used

Year

1939

Refit Year

2007

Documented Year

1939

Cabins

3

Sleeps

6

Full Beam Master

Yes

Heads

3

Crew Cabins

3

Crew Sleeps

5

Maximum Speed

11.5 Knots

Cruise Speed

8 Knots

Range NMI

1000

Fuel Type

Diesel

Hull Material

Wood

Hull Finish

Interlux

Air Conditioning

Yes

Bow Thrusters

Yes

1100 Gallons (4163.95 Liters)

1200 Gallons (4542.49 Liters)

100 Gallons (378.54 Liters)

Gross Tonnage

89

Displacement

178000

Designer

John Trumpy

Interior Designer

John Trumpy

Builder

Mathis Yacht Building Company

Exterior Color

White

Engines

Engine 1

  • Engine Make: Detroit Diesel
  • ModelEngine Model: 8V71N
  • Engine TypeEngine Type: Inboard
  • Power HPPower HP: 228.00
  • Power KWPower KW: 170.02
  • Fuel TypeFuel Type: Diesel
  • Engine LocationEngine Location: Port

Engine 2

  • Engine Make: Detroit Diesel
  • ModelEngine Model: 8V71N
  • Engine TypeEngine Type: Inboard
  • Power HPPower HP: 228.00
  • Power KWPower KW: 170.02
  • Fuel TypeFuel Type: Diesel
  • Engine LocationEngine Location: Starboard
  • Engine Quantity2
  • Generators

    Generator 1

    • Generator Make: Northern Lights
    • Generator KW: 30.00
    • Generator RPM: 1800.00

    Generator 2

    • Generator Make: Northern Lights
    • Generator KW: 27.00
    • Generator RPM: 1800.00

    General Arrangement

    INNISFAIL 91ft Mathis Trumpy Yacht For Sale

    GA Layout

    Full Details

    Overview

    INNISFAIL, Contract #242, is one of the few remaining Mathis-Trumpy fantail yachts built. Commissioned by Joseph M. Cudahy of Illinois for US East Coast cruising, she was the second Mathis Trumpy he had commissioned. Built as INNISFAIL, she was later named YP-354 in 1942 by the US Navy as she was commandeered for service during World War II. During her time with the Navy, she had two 20mm cannons mounted on her decks and a depth charge rack on her stern. She served her country in this manner for 5 years before being refit in 1947 by the US Government. She continued to serve the US Government and was utilized by US Presidents, foreign dignitaries, and heads of state until 1965, at which point she returned to private ownership. A comprehensive 2007 refit restored her original name. She has been well cared for inside and out and holds a current USCG Inspected Vessel Certificate for 65 Passengers.

    Key Features

    • Classic American fantail motor yacht

    • World War II Veteran and used by numerous U.S. Presidents

    • Large aft deck and enormous salon

    • 3 Owner and guest ensuite staterooms

    • Large crew accommodations with 3 cabins

    • USCG-Inspected for 65 passengers

    • Beautiful condition throughout

    Accommodations

    INNISFAIL features John Trumpy’s highly desirable “galley-up” arrangement. The wheelhouse is forward, followed by a full-beam galley with pass-through access to the portside deck, a spacious salon, and a beautiful aft fantail deck that can be open to the breeze or enclosed in inclement weather.

    Forward on the lower level is crew accommodations for five, followed by the engine room, a full-beam master stateroom, a midship guest twin, and an aft VIP twin located beneath the fantail. All guest staterooms are ensuite.

    Galley

    • Formica countertops

    • GE 5-Burner stainless glass-top range 

    • Overhead extraction fan

    • Whirlpool stainless convection microwave (2022)

    • Stainless refrigerator (2022)

    • Coffee maker

    • Toaster

    • Large double stainless sink with pull-out spray faucet

    • Parquet sole

    • Overhead lighting

    • 2 x 15” Round ports

    • Large windows allowing generous natural light

    • Half Dutch door/pass-through to portside deck

    • Excellent storage for foodstuffs, plates, glasses, etc.

    • Access to the wheelhouse via companionway forward

    • Access to the salon via swing door

    • Access to the starboard deck via companionway door

    Salon

    • Samsung 40” TV (2024)

    • Carpeted sole

    • 12 x Windows with shades

    • Painted headliner with varnished solid-wood beam laths

    • 2 x Custom barrel chairs

    • 2 x Aluminum portlight side tables

    • Table lamp

    • Extra-long sofa to port

    • Large forward corner settee with cocktail table forward

    • Buffet chest with generous storage

    • A/C controls

    • Companionway to owner and guest staterooms

    Owner's Stateroom

    INNISFAIL features a full-beam owner’s stateroom located amidships. A previous owner modified the original arrangement of separate twin berths to a more contemporary offset queen berth layout, while maintaining the vessel’s traditional character. The passageway just outside the master stateroom contains a linen locker, fire hydrant station, and 120V remote electrical panels.

    • Offset queen berth 

    • Bureau with eight drawers 

    • Bureau with four drawers 

    • Full-length mirror on entryway door 

    • Cedar-lined hanging locker 

    • Large storage area beneath stairwell providing generous space for larger items 

    • A/C control and air vent 

    • 2 x Opening ports with curtains 

    • Painted overhead 

    • Painted bulkheads 

    • Carpeted sole 

    • LED overhead lighting 

    • Samsung TV mounted on aft bulkhead (2024) 

    • Smoke and carbon monoxide detector

    Ensuite Owner's Head

    • Marble-tiled stall shower

    • Porcelain pedestal wash basin

    • Tecma head

    • Corner cabinet

    • Opening portlight

    • Painted overhead

    • Painted bulkheads

    • Marble- tiled sole

    • Towel racks

    • Exhaust fan

    Aft VIP Guest Stateroom

    INNISFAIL features a generous full-beam aft VIP guest stateroom, maintained in its original configuration, offering two large fore-and-aft berths to port and starboard, each with drawer storage below. A centerline chest of drawers and two large hanging lockers complete the stateroom.

    • 2 x Twin oversized lower berths with 4 storage drawers beneath

    • Centerline chest of drawers

    • 2 x Cedar-lined hanging lockers 

    • 2 x Reading lamps 

    • 4 x Opening portlights with curtains 

    • Smoke and carbon monoxide detector 

    • Wall-to-wall carpet 

    • Air conditioning controls 

    • Painted overhead 

    • Painted bulkheads

    Ensuite Aft Guest Head/ Day Head

    • Large marble-tiled shower

    • Porcelain wash basin 

    • Marble-tiled flooring

    • Tecma head

    • Large mirror

    • Towel rack

    • Exhaust fan

    • Opening portlight with curtains

    • Direct access to hallway or adjacent cabin

    • Painted overhead

    • Painted bulkhead

    • 3-Door Locker with generous outboard storage

    Midship Guest Stateroom

    • 2 x Fore-and-aft twin berths with large storage drawers beneath

    • Cedar-lined hanging locker

    • A/C control and air vent

    • 2 x 4-Drawer bureaus

    • Carpeted sole

    • Painted overhead

    • Painted bulkheads

    • Opening portlight with curtain

    Ensuite Midship Guest Head

    • Marble-tiled shower

    • Marble-tiled sole

    • Exhaust fan

    • Mirror

    • Tecma electric head

    • Porcelain wash basin

    • Opening portlight with curtain

    • Painted overhead

    • Painted bulkheads

    Crew Accommodations

    Located forward and accessed via a companionway ladder from the pilothouse, this area includes a forward captain’s cabin with a centerline full berth, a nicely sized settee with laundry area, and two over-under twin crew cabins to port and starboard, along with direct access to the engine room. The space is finished with white paneling with teak trim.

    Captain's Cabin

    • Centerline full berth with drawer storage beneath

    • Desk/office area

    • Bookshelves

    • 2 x Reading lamps

    • Overhead lighting

    • Hanging locker

    • 6 x Opening ports

    • Painted overhead

    • Painted bulkheads

    • Mirror

    • Carpeted sole

    • Epson printer/copier/fax

    • Garmin repeater – (Not currently connected to GPS antenna)

    Port Crew Cabin

    • Upper and lower single berths

    • Opening portlight

    • Hanging locker with mirror on inside of door

    • Multiple shelves

    • Teak-and-holly sole

    • Generous drawer storage beneath berths

    • 2 x Reading lamps

    Starboard Crew Cabin

    • Upper and lower single berths

    • Opening portlight

    • Toiletry cabinet

    • Hanging locker with mirror on inside of door

    • Teak-and-holly sole

    • 2 x Reading lamps

    Crew Head

    • Tecma electric head

    • Stainless wash basin

    • Stall shower

    • Towel bars

    • Overhead light and fan assembly

    • Teak-and-holly sole

    Crew Social Area

    • Teak-and-holly sole

    • LG washer and dryer

    • Varnished dinette table with seating for five (5)

    • Bookshelf

    • Stairs to pilothouse

    • GE chiller/refrigerator

    • 2 x Opening portlights

    • Flat-screen TV

    • Sony stereo system

    • Overhead locker storage

    • 4-Person Winslow valise life raft (Repacked 2/2026, valid for 3 years)

    • ACR EPIRB in ditch bag

    • Vacuum

    • Locker for cleaning supplies

    • Iron and ironing board

    Hull and Deck Equipment

    • 2" Mahogany plank-on-oak frame hull, screw-fastened

    • 3x Steel bulkheads (anchor locker, forward engine room, aft engine room)

    • Varnished teak-covered side decks, bow, and fantail

    • Assorted fenders and dock lines

    • Assorted life jackets and all USCG-required safety gear, placards, and lighting

    • 3 x throwable ring buoys

    • Full-beam transom upholstered bench seat

    • Teak dining table

    • 6 x Teak dining chairs with cushions

    • 2 x Teak aft deck dry bars

    • Aft deck KitchenAid refrigerator and freezer drawers

    • Aft deck wine chiller

    • Aft deck Scotsman ice maker

    • Full aft deck Isinglass enclosure with zippered openings

    • Port and starboard aft deck wing doors

    • Teak rails running the full length of the vessel with double intermediate lifelines

    • Folding signal mast with steaming and anchor lights

    • 4 x Hand-crank tender davits

    • 10’ Wooden dinghy with oars

    • 12’ Wooden dinghy with oars and 6hp Mercury outboard

    • 2 x Cowl vents

    • Deck box

    • Coolers

    • Marquipt boarding stairs (8 steps)

    • Side boarding ladder

    • Burgee staff socket

    • Anchor davit

    • 2 x Danforth-type anchors, approximately 70lbs and 60lbs

    • Ideal windlass with foot switch

    • Ventilation hatch to crew quarters

    • Forward upholstered bench seat

    • 2 x Deck boxes for cleaning supplies

    • Bow shade

    • Freshwater wash spigot, portside amidships

    • Starboard-side stairs to flybridge and tender deck

    • Air draft:

    • 30’ - Mast up

    • 27’ - Mast down, antennas up

    • 21’ - Mast down, antennas down, top of radar 


    Machinery and Electrical

    • 2 x Detroit Diesel 228hp 8V71N engines (Approximately 10,050hrs 5/2026)

    • 2 x Allison MH30 2.97:1 transmissions

    • 1996 Northern Lights 30kW 1800 RPM generator (8,322hrs 5/2026)

    • 1992 Northern Lights 27kW 1800 RPM generator (13,806hrs 5/2026)

    • 2 x 8D Engine starting batteries

    • 2 x 8D Generator starting and house batteries

    • 2 x ProMariner ProNautic 12-50P chargers (one for house bank, one for starting bank)

    • Oil change pump for main engines and transmissions

    • Dual Racor fuel filters for both generators

    • Dual Racor fuel filters for both main engines

    • 2 x Dometic 48,000 BTU chillers with various air handlers throughout the yacht

    • 2 x 20-Gal water heaters

    • Metabo HPT 135 PSI air compressor

    • Marathon freshwater pump with accumulator tank

    • Manual Hynautic hydraulic steering

    • 2 x New main engine through hulls (2026)

    • New port generator through hull (2026)

    • 50-Amp shore power service inlets, port and starboard

    Wheelhouse and Electronics

    • Binnacle compass

    • Air whistle

    • Air horn

    • Searchlight

    • 2 x Double-lever controls

    • 2 x Engine gauge clusters

    • American Bow Thruster control

    • Raytheon ST60+ rudder angle indicator

    • Raymarine ST40 digital depth sounder

    • 2 x ICOM IC-M510 VHF radios with CommandMic units (2025)

    • Simrad AP28 autopilot

    • Simrad QS80 autopilot dodge lever

    • Simrad EVO12 radar/chartplotter

    • 2 x Engine room cameras tied into Simrad system

    • Aft deck camera tied into Simrad system

    • ACR AIS Transceiver

    • 8-Spoke ship's wheel with stainless rim

    • 12-Volt panel

    • 120-Volt panel

    • Fusion stereo

    • Overhead lighting

    • Engine shutdown control box

    • Framed Certificates of Inspection on aft bulkhead

    • Chelsea clock and barometer set

    • AC controls

    • Upholstered bench seat with two chart drawers beneath

    • Bilge pump control panel

    • Wipers and controls

    • Teak parquet sole

    Broker Remarks

    INNISFAIL is unquestionably one of the most significant and recognizable classic American yachts presently offered for sale and represents an exceptionally rare opportunity to acquire a true piece of yachting history. A highly desirable, larger pre-war Trumpy, she is beautifully maintained, thoughtfully updated, and well-equipped for both private enjoyment and respectful commercial use. Her timeless lines, graceful proportions, and expansive crew accommodations provide a level of comfort and practicality seldom found in yachts of her era.

    Commissioned in 1939, INNISFAIL has enjoyed a remarkable and storied history, having hosted numerous United States Presidents (Roosevelt, Truman, Eisenhower, Kennedy, Nixon, Ford, Reagan, and Clinton), foreign dignitaries, and heads of state throughout her lifetime. During World War II, she proudly served the United States Navy as patrol vessel YP-345, outfitted with twin 20mm cannons on deck and depth charge racks mounted aft. Her survival through wartime service and the many chapters of her distinguished career only further solidify her standing as one of the truly iconic surviving American motor yachts.

    The current owners have proven to be exceptional stewards, cruising her extensively from the Florida Keys to Nantucket while maintaining her to a very high standard. Although operated solely as a private yacht, the owners have elected to preserve her USCG Inspected Passenger Vessel certification for up to 65 passengers, a designation requiring rigorous annual and biennial inspections and surveys.

    INNISFAIL presents exceptionally well throughout, and discerning buyers who step aboard will immediately appreciate the pedigree, craftsmanship, and extraordinary level of care she represents. Few yachts afloat today can offer such a compelling combination of provenance, capability, and enduring elegance.


    Disclaimer

    The company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change or withdrawal without notice.

    Contact

    For more information about this yacht, please contact Jonathan Chapman We look forward to working with you!

    For more information about this yacht, please contact Jonathan Chapman. We look forward to working with you!

    For more information about this yacht, please contact Jonathan Chapman.

    INNISFAIL 91ft Mathis Trumpy Yacht For Sale
    Jonathan Chapman
    Managing Partner New England & Mid-Atlantic

    55 America's Cup Avenue

    Newport RI 02840 US

    +1 (401) 474-4793