Pleasure Craft

1
Pleasure Craft

• Lead Staff Connie Dang
• December 15, 2006

2
Pleasure Craft

• Equipment Types
• Outboards (Gasoline, Diesel)
• Sailboats (Gasoline, Diesel)
• Personal Watercraft (Gasoline)
• Inboards (Gasoline, Diesel)
• Sterndrives (Gasoline)
• Inboard Jets (Gasoline)

3
Growth Factor Updates

• Growth factors
• 1970-1989
• California State University, Fullerton study
• 1990-2005
• Actual DMV summary data from 1990-2005
• Normalized to calendar year 2000
• Growth Factors 2005
• Applied average annual growth
• Based on 1990-2005 DMV summary data as two-year
  moving average
• Base Year Population and Age Distribution
• 2000 DMV detailed report
• Model year and vessel type registration
• Assumption of engine-to-boat ratio from National
  Marine Manufacturers Association data

4
Growth Factors
5
Allocation

• OFFROAD spatially allocates the base year
  population. For Pleasure Craft, the allocation
  profile is based on area of use as defined by the
  1995 Systems Applications International (SAI)
  survey.
• Issue
• Evaporative emissions should be allocated to the
  area where the vessel is stored.

6
Redistribution of Evaporative Emissions

• Statewide evaporative emissions for pleasure
  craft are redistributed outside of OFFROAD.
• Split into trailer/water-stored vessels
• Split evaporative emissions (diurnal and resting)
  into trailer/water-stored
• Allocate trailer-stored using 2005 DMV detailed
  registration for each equipment type by county
• Allocate water-stored using marina slip count by
  county

7
Trailer/Water-Stored Split

• Used classified ads from boating websites (e.g.
  boattrader.com) to locate vessels for sale in
  California
• Ad info usually consisted of vessel type, length
  and engine hp
• Since majority of vessels with engine hp 175 or
  less are trailer-stored, sales ad info used to
  estimate percentage of vessels with 175 hp and
  greater that are trailer/water-stored
• Trailer/water-stored fraction checked against
  USEPAs percentages

8
Marina Slip Count

• Compare ARB and EPAs total vessel population
  that are water-stored against marina call-in
  survey
• Marina water-stored survey consisted of gathering
  data from marina websites (e.g. boatharbors.com,
  marina.org) and phone survey of marina/lake
  facilities
• Found about 500 marina/lake facilities statewide
• Determined number of wet slips at each facility
• ARBs water-stored population is consistent with
  marina survey results
• Slips in a given zip code were mapped using GIS
  and allocated to county/air basin/air district

9
Evaporative Emissions Redistribution
10
Exhaust Emission Allocation(from SAI survey)
11
Other Modeling Changes

• Useful life
• Currently use 20 years for all pleasure craft
  equipment types
• Change from 9 years (pwc) and 16 years (all
  others)
• Load factor for inboards, sterndrives, and
  inboard jets is 0.21 (previously 0.38 )
• Average horsepower (previously 164 hp)
• Inboards 250 hp
• Sterndrives 185 hp
• Inboard jets 297 hp

12
Pleasure Craft Inventory
13
Statewide Comparisons
14
SJV Comparisons