View source for Engineering:Impulse (dinghy)

{{Short description|Sailboat class}}
{{Use Australian English|date=November 2020}}
{{Infobox sailboat specifications 
|name              = Impulse
|insignia          = File:Impulse-logo.png
|insignia size     = 100px
|insignia alt      = 
|insignia caption  = 
|line drawing      = 
|line size         = 
|line alt          = 
|line caption      = 
|image boat        = File:Impulse-dinghies.jpg
|image size        = 
|image alt         = 
|image caption     =

|designer          = Arthur Caldwell
|architect         =
|location          = {{wipe|Australia}}
|year              = 1975
|no built          = 
|design            = 
|class             = 
|brand             = 
|builder           = Tim Wilson Yacht Design<br>Formula Sailcraft
|role              =

|boats             = 
|crew              = 
|trapeze           = 
|draft             = {{convert|2.00|ft|m|abbr=on}} with [[Engineering:Centreboard|centreboard]] down
|air draft         = 
|displacement      = {{convert|104|lb|kg|0|abbr=on}}

|hulls             = 
|hull type         = [[Engineering:Monohull|monohull]]
|construction      = wood or fibreglass
|loa               = {{convert|13.12|ft|m|abbr=on}}
|loh               = 
|lwl               = 
|beam              = {{convert|4.94|ft|m|abbr=on}}
|hull draft        = 
|hull weight       = 
|engine            =

|appendages        = 
|keel type         = centreboard
|ballast           = 
|rudder type       = transom-mounted [[Engineering:Rudder|rudder]]

|rigs              = 
|rig type          = catboat rig
|I                 = 
|J                 = 
|P                 = 
|E                 = 
|mast length       = 
|rig other         =

|sails             = 
|sailplan          = [[Engineering:Catboat|catboat]]
|sailarea main     = {{convert|83.00|sqft|m2|abbr=on}}
|sailarea headsail = 
|sailarea spin     =
|sailarea gen      =
|sails other       =
|sailarea upwind   =
|sailarea downwind =
|sailarea total    = {{convert|83.00|sqft|m2|abbr=on}}

|rating            = 
|d-pn              = 
|rya-pn            = 
|phrf              =

|status            = 
|previous          = 
|successor         = 
}}

The '''Impulse''' is an Australian sailing dinghy that was designed by Arthur Caldwell as a one-design racer and first built in 1975.<ref name="Data">{{cite web|url= https://sailboatdata.com/sailboat/impulse-dinghy|title= Impulse dinghy sailboat|access-date= 14 November 2020|last= McArthur|first= Bruce|work= sailboatdata.com|year= 2020|archive-url= https://archive.today/20201114213528/https://sailboatdata.com/sailboat/impulse-dinghy|archive-date= 14 November 2020|url-status= live}}</ref>

==Production==
The design was originally intended as a wooden boat for [[Engineering:Homebuilt machines|amateur construction]], but has more recently been manufactured of fibreglass. In the past it was built by Tim Wilson Yacht Design, but that company is out of business. Today it is built by Formula Sailcraft (now known as the Dinghy Shop) in Williamstown, Victoria, {{wipe|Australia}}. Production started in 1975 and the type remains in production.<ref name="Data"/><ref>{{cite web|url= https://sailboatdata.com/builder/formula-sailcraft|title= Formula Sailcraft|access-date= 14 November 2020|last= McArthur|first= Bruce|work= sailboatdata.com|year= 2020|archive-url= https://archive.today/20201114213525/https://sailboatdata.com/builder/formula-sailcraft|archive-date= 14 November 2020|url-status= dead}}</ref><ref name="TW">{{cite web|url= http://www.twyachtdesign.com/|title= TW Yacht Design Impulse|access-date= 14 November 2020|author= Tim Wilson Yacht Design|work= twyachtdesign.com|archive-url= https://web.archive.org/web/20100622045708/http://www.twyachtdesign.com/|archive-date= 22 June 2010|url-status= dead}}</ref><ref name="DS">{{cite web|url= https://dinghyshop.com.au/collections/impulse-class-dinghy|title= Impulse Class Dinghy|access-date= 14 November 2020|author= Dinghy Shop|work= dinghyshop.com.au|year= 2020|archive-url= https://archive.today/20201114213652/https://dinghyshop.com.au/collections/impulse-class-dinghy|archive-date= 14 November 2020|url-status= live}}</ref>

==Design==
The Impulse is a recreational [[Engineering:Sailboat|sailboat]], built predominantly of wood or fibreglass. It has a [[Engineering:Catboat|catboat]] rig, a raked stem, a vertical [[Engineering:Transom (nautical)|transom]], a transom-hung [[Engineering:Rudder|rudder]] controlled by a [[Engineering:Tiller|tiller]] and a retractable [[Engineering:Centreboard|centreboard]]. It displaces {{convert|104|lb|kg|0|abbr=on}}.<ref name="Data"/>

The boat has a [[Engineering:Draft (hull)|draft]] of {{convert|2.00|ft|m|abbr=on}} with the centreboard extended and {{convert|3|in|cm|abbr=on}} with it retracted, allowing [[Engineering:Beaching (nautical)|beaching]] or ground transportation on a [[Engineering:Boat trailer|trailer]] or car roof rack.<ref name="Data"/>

==Operational history==
The boat is supported by a class club, the ''Australian Impulse Sailing Association'', which organizes racing events.<ref>{{cite web|url= https://sailboatdata.com/association/australian-impulse-sailing-association|title= Australian Impulse Sailing Association|access-date= 16 November 2020|last= McArthur|first= Bruce|work= sailboatdata.com|year= 2020|archive-url= https://archive.today/20201116122304/https://sailboatdata.com/association/australian-impulse-sailing-association|archive-date= 16 November 2020|url-status= live}}</ref>

==See also==
*[[Engineering:List of sailing boat types|List of sailing boat types]]

'''Similar sailboats'''
*[[Engineering:Laser (dinghy)|Laser (dinghy)]]

==References==
{{Reflist}}

==External links==

[[Category:Dinghies]]

{{Sourceattribution|Impulse (dinghy)}}