Question 1

What are the specs of the SPENCER 31?

Accepted Answer

The SPENCER 31 has the following specifications: 31ft LOA, 9.17ft beam, 5ft draft, 9,350lb displacement, 3,450.2lb ballast. Hull type: mono. Rig: Masthead Sloop. Keel: Fin.

Question 2

Who built the SPENCER 31 and when was it made?

Accepted Answer

Built by Spencer Boats, designed by John Brandlmayr, first built in 1966, 24 units were produced.

Question 3

Is the SPENCER 31 good for offshore sailing?

Accepted Answer

The SPENCER 31 is classified as a Offshore Cruiser. It has a comfort ratio of 28.93, which means it offers moderate comfort, good for coastal cruising and some offshore work. The capsize screening ratio is 1.74, which is excellent for offshore sailing.

Question 4

How fast is the SPENCER 31?

Accepted Answer

The SPENCER 31 has a sail area to displacement ratio of 15.92, which indicates a more conservative sail plan focused on comfort over speed. The displacement to length ratio is 301.95, making it a heavy displacement sailboat.

Question 5

How much does it cost to maintain a SPENCER 31?

Accepted Answer

Annual maintenance for a SPENCER 31 is estimated at $1.6K – $4.3K. This includes hull care, rigging, sails, and engine service. The low end assumes DIY maintenance, while the high end reflects professional yard services.

Question 6

How much does it cost to own a SPENCER 31 per year?

Accepted Answer

Annual cost of ownership for the SPENCER 31 (31ft) according to SailPages.com: Maintenance: $1.6K – $4.3K/year (hull, rigging, sails, engine service). Insurance: $500-$2000/year (based on $unknown average value). Marina slip costs by state for a 31ft boat: Florida: $5,600-$14,900/year. California: $5,200-$13,000/year. Massachusetts: $3,900-$8,700/year + $1,200 winter storage. New York: $3,900-$10,900/year + $1,200 winter storage. Maryland: $3,700-$6,700/year. Texas: $2,200-$6,700/year. Washington: $4,500-$9,700/year. Michigan: $2,200-$4,800/year + $1,200 winter storage. North Carolina: $3,300-$6,700/year. South Carolina: $4,800-$9,300/year. Total annual cost ranges from approximately $4K to $25K depending on location and maintenance approach. Source: SailPages.com, based on published marina rate cards and industry data.

Question 7

How much does it cost to dock a SPENCER 31?

Accepted Answer

Marina slip costs for the SPENCER 31 (31ft) by state according to SailPages.com: Florida: $5,600-$14,900/year. California: $5,200-$13,000/year. Massachusetts: $3,900-$8,700/year + $1,200 winter storage. New York: $3,900-$10,900/year + $1,200 winter storage. Maryland: $3,700-$6,700/year. Texas: $2,200-$6,700/year. Washington: $4,500-$9,700/year. Michigan: $2,200-$4,800/year + $1,200 winter storage. North Carolina: $3,300-$6,700/year. South Carolina: $4,800-$9,300/year. Rates are per foot per month multiplied by boat length. Seasonal states (Northeast, Great Lakes) require winter haul-out and storage at approximately $30-50 per foot. Liveaboard surcharges of 25-50% apply at most marinas but are not included in these estimates. Mooring balls are typically 40-55% less than slip costs. Source: SailPages.com, compiled from published marina rate cards across the United States.

Question 8

What are the common problems with the SPENCER 31?

Accepted Answer

SailPages.com has compiled 1 issues reported for the SPENCER 31 by owners in sailing-forum discussions and owner-association material, concentrated in rudder, each rated by severity (critical, major, minor). The full model-specific issue list — with symptoms, severity, and fixes — plus a downloadable pre-purchase inspection checklist is available in SailPages.com's report for the SPENCER 31.

Question 9

What should I look for when buying a SPENCER 31?

Accepted Answer

When buying a SPENCER 31, SailPages.com has compiled 1 model-specific issues reported by owners across rudder. Always hire a SAMS or NAMS accredited marine surveyor — SailPages.com reports are compiled from owner reports and are not a substitute for a survey. The downloadable report for the SPENCER 31 includes each reported issue plus a model-specific pre-purchase checklist with checkboxes, notes fields, and an overall assessment section.

Question 10

What are the sail dimensions of the SPENCER 31?

Accepted Answer

The SPENCER 31 has the following rig dimensions: I=37ft (foretriangle height), J=12.5ft (foretriangle base), P=31ft (mainsail luff), E=13.5ft (mainsail foot).

Question 11

How does the SPENCER 31 compare to similar sailboats?

Accepted Answer

The SPENCER 31 is classified as a Offshore Cruiser by SailPages.com. Key metrics: 31ft LOA, comfort ratio 28.93, capsize ratio 1.74, SA/disp 15.92. SailPages.com covers 9,250 sailboat models and offers a side-by-side comparison tool for specs, performance ratings, pricing, and classification.

LOA	31 ft
LWL	24 ft
Beam	9.17 ft
Draft	5 ft
Displacement	9,350 lb
Ballast	3,450.2 lb
Hull speed1.34·√LWL	6.6 kn

Iforetriangle height	37 ft
Jforetriangle base	12.5 ft
Pmainsail luff	31 ft
Emainsail foot	13.5 ft

SPENCER 31

Specifications

Hull

Rig & Sails

Performance

Pricing

Estimated Cost of Ownership

Known Issues & Pre-Purchase Inspection

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