28′ Gannon and Benjamin Yawl - ID: 42095


Launched 1995
LOA 28' 0"
Beam 9' 0"
Draft 4' 0"

28′ Gannon and Benjamin Yawl


Tern is the first of three Gannon and Benjamin style ‘Rozinante’ yawls. Nat Benjamin designed these boats with the classic Herreshoff design in mind. Since launch, Tern has received significant updates including the 2015 Beta Diesel and a full 2016 B&G electronics package. The boat summers in Falmouth, Maine and the 2015 Triad trailer allows for easy transportation.

A 2018 survey is available upon request. 

Make: Gannon & Benjamin Tern Class

Hull I.D.: GOBTERN15F95
Model: Tern Class Yawl
Reg. # : NH 2485 UT
HIN : NHZ926090415



2015 Triad 2 axle galvanized trailer; 21/2 “ ball; surge brakes
GVW 10,400
Plate: NH 423739
Model: Rozin28
VIN: 1T9S262B6FR013001



Cedar Planking; white oak frames; dynel over marine plywood decks and coach top;epoxy & cloth over marine plywood cockpit sole (2016) ; cedar; angelique; oak; wana; &n teak cockpit (2016), solid spruce spars; gaff main; marconi mizzen; roller furling jib.


Recent Work:

Performed at the Gannon & Benjamin Yard, Vineyard Haven Massachusetts.

Install Beta 14 HP Marine diesel
Michigan Sailor style propeller
S.S. Shaft
plastic fuel tank
high rise engine exhaust
bronze strut; marine bearing; packing box
custom bronze floors
raw water strainer/ vent and sea-cock thru-hull
custom bronze floor timbers
Custom Bronze bow anchor roller
Fractured plank replacement ( starboard aft bilge turn)
Custom cockpit (to accommodate engine and keep it dry)



Original Main; mizzen & self tending jib
2016 roller furling jib; Nat Wilson
2017 Gaff mainsail
2017 marconi mizzen


spliced and served SS wire (original)
2016 Schaeffer roller furler; custom swaged headstay

Main Halyards: 3 strand poly (original)
Running rigging: 3 strand poly new 2017
2016 wooden mast hoops
wooden blocks for all running rigging (original)



2016 B&G package

Zeus 2 T12M Multifunction MFD Chartplotter
B&G VHF V50 Marine Radio
Triton 508 wind sensor
B&G 4G Broadband Radar
ZG 100 GPS Antenna
2- Triton cockpit digital displays
All: 2016/17
Bronze DST 800 transducer
Ram Mount horizontal swing arm for Zeus 2
NMEA 2000 network
Scanstrut self leveling mast radar mount with gps/vhf antenna mount
LED Masthead light
VHF mastheat antenna
Ritchie bulkhead mount compass



2016 Blue Sea breaker panel
2016 200 amp hour glass mat marine battery in low profile commercial battery box
12 volt (20 cabin lights
2- 12 volt charging receptacles


Ground Tackle:

1-22# Lewar Claw anchor ( on bronze bow roller)
1-25# danforth ( on deck chocks)
2 bronze anchor rode deck plates w/covers
2-1/2” x 250′ Yale Brait anchor rodes 2016/17 w/ 20′ gal. Chain on each



Shipmate “Skippy” style wood/coal stove (original)
Water fill deck iron for Shipmate (original)
Origo gimballed alcohol non-pressurized gimballed single burner stove
All bronze hardware; custom & stock (original)
5 pack life jacket package
2- docking lines
1-spring line
7 gallon plastic water tank (below berth)
flipper style fresh water pump and bowl sink
2016 Sunbrella covered cockpit cushions
2017 Sunbrella covered Vee berth cushions
Guzzler diaphram pump in cockpit (original)


Note from the owner: 

Tern is a 28′ “Rozinante” style yawl. Nat Benjamin, the designer, broadened her out by 18” in the beam, creating fuller body sections thus making her both roomier where one wants it and stiffer under sail. She has a gaff mainsail with 2 sets of reef points. Mizzen is marconi and jib is roller furling. With her clean lines she does not require overpowering. First reefing is comfortably done at 15-20 knots of wind; second at 25+-. Reefing is all accomplished from the cockpit.

She has comfortable sitting headroom in the cuddy/cabin and the double vee berth is luxurious! Below the berth is the water tank and the battery. There is easy sitting access to the Shipmate stove and Origo gimballed alcohol stove. Both are to starboard. To port is the flipper pump and sink as well as the Zeus 12” chart plotter. The plotter swings and locks in place for clear cockpit visibility as well. The VHF radio is accessible from both below and the cockpit.

Her cockpit has 2 comfortable cushion covered bench seats. The cockpit sole is a non-skid epoxy covered cloth over marine plywood. There is a 3” curb for engine access ( the aft end of the main bulkhead also is removable for easy engine access). All cockpit water is directed outboard so as to keep the engine dry. All drainage goes to the bilge. There is a large guzzler pump in the cockpit and an electrical bilge pump in the lowest part of the bilge. As of the summer of 2017, Tern has had very dry bilges and the pumps are relatively inactive.

The large battery was sized to accommodate a surplus for the pump as well as for an expanded electronics system. The 4G Broadband Radar was chosen for it’s low electrical draw.


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