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Vancouver 2018 - Intermediate Weather with Scott Crawshaw
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Forecasting weather conditions are major aspects of cruising under sail and power. This course is aimed at the cruiser who aspires to head offshore and includes a virtual planning of the Vic-Maui Route, a race that presenter Scott Crawshaw won in 2000 with Navy training vessel HMSC Oriole. Building on the lessons learned, these1 ½ days focus on Anti-Cyclones; Swell & Sea Waves; Surface Water Circulation; Upper Air Charts & Satellite Imagery; Gap & Promontory Winds; Tropical & Sub-Tropic & more.

 Export to Your Calendar 2018-04-22
When: Saturday, April 21 & Sunday, April 22, 2018
9:15 AM-4:30 pm
Where: Map this event »
Vancouver Maritime Museum, TK Gallery: with Scott Crawshaw
1905 Ogden Avenue
Vancouver, British Columbia  V6J 1A3
Contact: Shannon Rae

Online registration is available until: 2018-04-20
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Intermediate Marine Weather Course

 With Scott Crawshaw, Navy Commander,

Winner of Vic-Maui in 2000 with HMCS ORIOLE, on corrected time!

Saturday, April 21 & Sunday April 22, 2018

(includes the beginner course Saturday 9:15-am 12:15pm)

Purpose and Benefit:
Forecasting and withstanding weather conditions are major aspects of cruising under sail and power, whether riding it out offshore, seeking safety in a protected anchorage, or avoiding being too close to a lee shore. 


This two day workshop begins with the fundamentals of weather (see Basic Weather Forecasting) and shows how weather satellites and technology have transformed forecasting to show cruisers the best way to combine their own observations with technology. Participants will learn relevant information that will ensure their enjoyment and safety at sea in both foul and fair weather. 


BONUS:  This course also includes practical exercises, including a virtual Victoria to Maui transit where students will plot their positions, review weather products and determine the best tactics / weather routing.


Course Topics:


o   Cold / Warm Core

o   Associated Weather

o   Ridge / Col

o   Blocking High

o   Sailing Strategy

 Swell and Sea Waves

o   Period, Amplitude, Wavelength, Steepness, Fetch

o   Coastal, Wind, Tide and Current Affects

o   Surge

o   Tsunamis

o   Interpreting Wave Data on a Chart

o   Manoeuvring in Large Waves

  Surface Water Circulation

o   Set and Drift

o   Upwelling

o   Permanent and Seasonal Currents

o   Effects of Current on Climate

o   ENSO

Upper Air Charts and Satellite Imagery

o   Isoheights

o   Vortices

o   Effect on Surface Weather (Upper Air Support)

o   Wind Shear

o   Types of Satellites (Orbits, Wavelength)

Gaps and Promontory Winds

o   Land and Sea Breezes

o   Anabatic / Katabatic Winds

o   Pressure Effects on Gaps and Promontories

o   Gulf of Tehuantepec

Tropical and Sub-Tropical Weather

o   Doldrums, ITCZ, Trade Winds, Westerlies / Easterlies

o   Monsoons

o   Tropical Waves

o   Squalls and Thunderstorms (Formation, Associated Clouds and Conditions)

Tropical Cyclone Formation and Avoidance

o   Terms (Path, Eye, Trough Line, Semi-Circles)

o   Seasons and Distribution

o   Warnings (Radio, Swell, Sky, Changes to Wind Strength / Direction and Pressure)

o   Associated Weather

o   Rules for Avoidance

Voyage Planning

o   Pilot Charts (Wind / Current Rose)

o   Onboard Observations WRT Relative Position to Oncoming Weather

o   Onboard Weather Products (PACTOR products, GRIB)

o   Virtual Vic-Maui

Scott Crawshaw has sailed for over 40 years and has over 50,000 miles of ocean water experience.  This includes skippering the Royal Canadian Navy’s Tall Ship, HMCS Oriole and four years of offshore sailing with his family aboard the sailing vessel Peregrinata.  His qualifications include a Transport Canada Master Mariner, unlimited tonnage; a Navy Surface Command Qualification, unlimited tonnage; an ISPA instructor qualification and is a CYA Yachtmaster.

He has sailed extensively in the Pacific, twice to Australia and five times to and from Hawaii.  He has participated in a number of international yacht races including four Victoria to Maui International Yacht Races where he was the winning skipper of the 2000 race and is the corrected time record holder.  In addition, he has competed in numerous Swiftsure races and a Van-Isle 360.  From 2002-2006 he cruised with his wife and two daughters down the coast of the Americas and across the South Pacific, including the Galapagos, to Australia.

Scott has been in the Royal Canadian Navy since 1979 and has extensive instructor experience in all navigation topics from basic to advanced.  He specialised in navigation and shiphandling and was the Navy’s Senior Navigation Instructor in 1989-1991 and again from 2006-2011.  In addition to HMCS Oriole he has commanded two of the RCN’s Maritime Coastal Defence Vessels, HMC Ships Whitehorse and Yellowknife and has extensive experience skippering the Orca class training vessels.

Scott has a degree in Physics and Physical Oceanography from Royal Roads Military College.  He currently lives in the UK, with his wife Sonia, where he is filling an exchange position with the Royal Navy until summer 2018.



Saturday, April 21           0915 – 1630            including Basic Marine Weather 9:15 am -12:15 pm

Sunday,  April 22            0915 – 1630


Where: Vancouver Maritime Museum, TK Gallery room


Lunch:  Bring your own, or buy a stellar lunch from an award-winning local "food truck" that will be on site, likely the "Flying Fish 'n' Chipper", best fish tacos in the city!


Cost (includes Basic Marine Weather):

BCA members - $200
Non-members - $240


There is a $15 processing fee in the event of participant cancellation.

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