KrillS y s t e m s

M/V Walla WallaFuel Savings Analysis

KrillS y s t e m s

M/V Walla Walla

KrillS y s t e m s

Typical Day

22 Crossings

30 Minutes each way

Speed over Ground

Total Fuel Flow

KrillS y s t e m s

Morning Routine

Idling7 minutes5.1 Gallons

Dock Pushing32 minutes40.1 Gallons

Eliminate Morning Dock Pushing

40 Gal x 365 days x $3.90 =

$56,940

KrillS y s t e m s

Jack Rabbit Starts

Apply throttle gradually

1.5 Gal x 22 crossings x 365 days x

$3.90 = $46,975

Half Speed Commanded

Full Speed Commanded

KrillS y s t e m s

Dock Pushing

Dock Pushing60 Shaft RPM29 Gallons

Dock Pushing50 Shaft RPM22 Gallons

Reduce Shaft RPM while pushing

7 Gal x 22 crossings x 365 days x $3.90

= $219,220

KrillS y s t e m s

Positive Restraint System

Engine Off while Docked

29 Gal x 22 crossings x 365 days x

$3.90 = $908,193

Payoff in 3-4 months

$500,000 Cost / $908,193 x 2 Ferries

KrillS y s t e m s

Summary

Eliminate morning dock pushing $56,940Reduce Jack Rabbit Starts $46,975Reduce Shaft RPM while Docked $201,220

Total $305,135 annually per boat

With Positive Restraint System $ 1,012,108 annually per boat

With Speed reductions and schedule adjustments, even more savings are possible