An in depth analysis of different procedural changes that can save up to one million dollars annually per vessel.

1. Krill
S y s t e m s
M/V Walla Walla
Fuel Savings Analysis

2. Krill
S y s t e m s
M/V Walla Walla

3. Krill
S y s t e m s
Typical Day
 22 Crossings
 30 Minutes
each way
 Speed over Ground
 Total Fuel Flow

4. Krill
S y s t e m s
Morning Routine
 Idling
7 minutes
5.1 Gallons
 Dock Pushing
32 minutes
40.1 Gallons
 Eliminate Morning Dock Pushing
40 Gal x 365 days x $3.90 =
$56,940

5. Krill
S 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

6. Krill
S y s t e m s
Dock Pushing
 Dock Pushing
60 Shaft RPM
29 Gallons
 Dock Pushing
50 Shaft RPM
22 Gallons
 Reduce Shaft RPM while pushing
7 Gal x 22 crossings x 365 days x $3.90
= $219,220

7. Krill
S 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

8. Krill
S y s t e m s
Summary
 Eliminate morning dock pushing $56,940
 Reduce Jack Rabbit Starts $46,975
 Reduce 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