Seafarer 31 Mark II
{{Short description|Sailboat class}}
{{Use dmy dates|date=January 2022}}
{{Use American English|date=January 2022}}
{{Infobox sailboat specifications
|name = Seafarer 31 Mark II
|insignia =
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|designer = McCurdy & Rhodes
|architect =
|location = United States
|year = 1974
|no built =
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|builder = Seafarer Yachts
|boats =
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|trapeze =
|draft = {{convert|5.25|ft|m|abbr=on}}
|air draft =
|displacement = {{convert|10300|lb|kg|0|abbr=on}}
|hulls =
|hull type = monohull
|construction = fiberglass
|loa = {{convert|31.00|ft|m|abbr=on}}
|loh =
|lwl = {{convert|25.08|ft|m|abbr=on}}
|beam = {{convert|9.75|ft|m|abbr=on}}
|hull draft =
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|engine = Universal Atomic 4 {{convert|30|hp|kW|0|abbr=on}} gasoline engine
|appendages =
|keel type = fin keel
|ballast = {{convert|4850|lb|kg|0|abbr=on}}
|rudder type = skeg-mounted rudder
|rigs =
|rig type = Bermuda rig
|I = {{convert|41.00|ft|m|abbr=on}}
|J = {{convert|13.25|ft|m|abbr=on}}
|P = {{convert|31.20|ft|m|abbr=on}}
|E = {{convert|11.75|ft|m|abbr=on}}
|mast length =
|rig other =
|sails =
|sailplan = masthead sloop
|sailarea main = {{convert|183.30|sqft|m2|abbr=on}}
|sailarea headsail = {{convert|271.63|sqft|m2|abbr=on}}
|sailarea spin =
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|sailarea total = {{convert|454.93|sqft|m2|abbr=on}}
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|previous = Seafarer 31 Mark I
|successor =
}}
The Seafarer 31 Mark II is an American sailboat that was designed by McCurdy & Rhodes as a racer-cruiser and first built in 1974.{{cite web|url = https://sailboatdata.com/sailboat/seafarer-31-mkii|title = Seafarer 31 MKII sailboat specifications and details|access-date = 8 January 2022|last= McArthur| first = Bruce |work = sailboatdata.com|year= 2022|archive-url= https://archive.today/20220107000445/https://sailboatdata.com/sailboat/seafarer-31-mkii|archive-date= 7 January 2022|url-status= live}}{{cite web|url = https://sailboatdata.com/designer/mccurdy-rhodes|title = McCurdy & Rhodes|access-date = 8 January 2022|last= McArthur| first = Bruce |work = sailboatdata.com|year= 2022|archive-url= https://archive.today/20211118181926/https://sailboatdata.com/designer/mccurdy-rhodes|archive-date= 18 November 2021|url-status= live}}{{cite web|url= https://sailboat.guide/seafarer/31-mkii|title= Seafarer 31 MKII|access-date = 7 January 2022|author= Sea Time Tech, LLC|work= sailboat.guide|year= 2022|archive-url= https://archive.today/20220108231653/https://sailboat.guide/seafarer/31-mkii|archive-date= 8 January 2022|url-status= live}}
The design was marketed by the manufacturer as the Seafarer 31 Mark II, to differentiate it from the unrelated William H. Tripp Jr. 1968 Seafarer 31 Mark I design.{{cite web|url= https://sailboatdata.com/sailboat/seafarer-31-mki|title= Seafarer 31 MKI sailboat|access-date= 8 January 2022|last= McArthur| first= Bruce |work= sailboatdata.com|year= 2022|archive-url= https://archive.today/20220107000038/https://sailboatdata.com/sailboat/seafarer-31-mki|archive-date= 7 January 2022|url-status= live}}{{cite web|url= https://sailboatdata.com/sailboat/seafarer-31-mki-yawl|title= Seafarer 31 MKI Yawl sailboat|access-date= 8 January 2022|last= McArthur| first= Bruce|work= sailboatdata.com|year= 2022|archive-url= https://archive.today/20220107000203/https://sailboatdata.com/sailboat/seafarer-31-mki-yawl|archive-date= 7 January 2022|url-status= live}}{{cite web|url= https://sailboatdata.com/designer/tripp-jr-william-h|title= William H. Tripp Jr.|access-date = 8 January 2022|last= McArthur| first = Bruce |work = sailboatdata.com|year= 2022|archive-url= https://archive.today/20211230223302/https://sailboatdata.com/designer/tripp-jr-william-h|archive-date= 30 December 2021|url-status= live}}{{cite web|url = https://sailboatdata.com/designer/mccurdy-rhodes|title = McCurdy & Rhodes|access-date = 8 January 2022|last= McArthur| first = Bruce |work = sailboatdata.com|year= 2022|archive-url= https://archive.today/20211118181926/https://sailboatdata.com/designer/mccurdy-rhodes|archive-date= 18 November 2021|url-status= live}}{{cite web|url= https://sailboat.guide/seafarer/31-mki|title= Seafarer 31 MKI|access-date= 8 January 2022|author= Sea Time Tech, LLC|work= sailboat.guide|year= 2022}}{{cite web|url= https://sailboat.guide/seafarer/31-mki-yawl|title= Seafarer 31 MKI Yawl|access-date= 8 January 2022|author= Sea Time Tech, LLC|work= sailboat.guide|year= 2022|archive-url= https://archive.today/20220107000031/https://sailboat.guide/seafarer/31-mki-yawl|archive-date= 7 January 2022|url-status= live}}
Production
The design was built by Seafarer Yachts in the United States, starting in 1974, but it is now out of production.{{cite web|url= https://sailboatdata.com/builder/seafarer-yachts|title= Seafarer Yachts 1965 - 1985|access-date = 9 January 2022|last= McArthur| first = Bruce |work = sailboatdata.com|year= 2022|archive-url= https://archive.today/20211118142450/https://sailboatdata.com/builder/seafarer-yachts|archive-date= 18 November 2021|url-status= live}}{{cite web|url= https://sailboat.guide/seafarer|title= Seafarer Yachts|access-date= 9 January 2022|author= Sea Time Tech, LLC|work= sailboat.guide|year= 2022|archive-url= https://archive.today/20211225171425/https://sailboat.guide/seafarer|archive-date= 25 December 2021|url-status= live}}
Design
The Seafarer 31 Mark II is a recreational keelboat, built predominantly of fiberglass, with a balsa-cored deck and with wood trim. It has a masthead sloop rig; a raked stem; a raised counter, reverse transom; a skeg-mounted rudder controlled by a wheel and a fixed fin keel. It displaces {{convert|10300|lb|kg|0|abbr=on}} and carries {{convert|4850|lb|kg|0|abbr=on}} of lead ballast.
The boat has a draft of {{convert|5.25|ft|m|abbr=on}} with the standard keel.
The boat is fitted with a Universal Atomic 4 {{convert|30|hp|kW|0|abbr=on}} gasoline engine or optionally a Palmer M-60 gasoline engine for docking and maneuvering. The fuel tank holds {{convert|20|u.s.gal}} and the fresh water tank has a capacity of {{convert|45|u.s.gal}}.
The design has sleeping accommodation for five people, with a double "V"-berth in the bow cabin, an L-shaped or optional U-shaped settee around a drop-down table and a straight settee in the main cabin. The galley is located on the port side just forward of the companionway ladder. The galley is U-shaped and is equipped with a three-burner stove, an ice box and a sink. A navigation station is opposite the galley, on the starboard side. The head is located just aft of the bow cabin on the both sides.
The design has a hull speed of {{convert|6.71|kn|km/h|abbr=on}}.