Emissions Management & Auditing for Tankers

28 September, 2010Satoru Ueno

TFMS Seminar in London 2010

CONTENTS

- Virtual Arrival + Oceanrouteing Service.

- Enhancement / Challenges with Optimum Ship Routeing Service.

- And further advantages for Tankers.

TFMS Seminar in London 2010

1,597.19(Feb 2009 - Jul 2010)

69.44

Virtual Arrival + Oceanrouteing saved

Outputs

mt / voyagemt / 23 voyage

(1) Decision of Virtual Arrival

Voyage Charterer authorizes Owner (Operator) + WNI with;(a) Full speed / consumption(b) Eco speed / consumption

Simulate ETA / Consumption with;(a) Full speed / consumption (b) Eco speed / consumption

with route recommendation.

Charterer WNI

(2) Slow steaming to destination

Voyage Charterer updates, if needed, Owner (Operator) + WNI with;(a) ETA

Oceanrouteing update with;- Route recommendation- Weather / sea / currents

Charterer WNI

(3) Post Voyage Evaluation

(a) Demurrage payment

(b) Split saved bunker (and Carbon) between Owner and Charterer.

Calculation of Audit Report on;

(a) ETA at full speed(b) Consumption at full

speed and saved bunker

Charterer WNI

1. Voyage Planning (Before Voyage) (a) Calculation Algorithm of Speed Reduction & Consumption(b) Speed and Consumption figures

2. En route performance monitoring (En route)Speed, RPM, Consumption, ETA monitoring vs weather/currents.

3. Evaluation / Auditing (Post Voyage) (a) ETA and Consumption calculation based on OSR (b) If no full speed periods, if no ECO speed periods. (c) Cargo heating in Virtual Arrival?(d) Virtual Arrival vs Charter Party compliance.(e) Consumption Audit - Warranted vs unwarranted.

2. Enhancement / Challenges

Enhanced method: OSR engine

ETA / Consumption taking into account;

- Varying RPM / Performance

- Varying Consumption

in accordance with ship behavior in weather / sea conditions expected.

Conventional method

Simulate ETA / Consumption at; - Constant RPM - Constant Fuel Consumption

(a) Calculation Algorithm

Enhanced method

Speed and Consumption figures can be calculated backward based on target (revised) ETA taking into account expected weather/sea conditions and ship performance analyzed.

Conventional method

Speed and Consumption are given by Charterer to WNI.

(b) Speed & Consumption figures

2. En route Monitoring

65

70

75

5

10

15

0

2

4

6

10/24 10/29 11/3 11/8 11/13 11/18 11/23 11/28

Wave Height [m]

Speed [kno

ts]

RPM

Heavy Conditions

Speed reducedas RPM reduced

Monitoring RPM, Speed, Weather during voyage

(a) ETA and Consumption calculation based on OSR (b) If no full speed periods, if no ECO speed periods.

3. Post Voyage Evaluation

(b) If no FULL speed periods, no ECO speed periods.

If full speed period missing

5

10

15

20

80 85 90 95 100 105 110

Ship Spe

ed [kno

ts]

RPM

Basing ship performance Speed and Consumption based on RPM-based Performance Model (OSR engine) with historical data.

◇Wave Height < 2[m], Long.Wind > 0 [knots]

◇ 2[m] < Wave Height < 3[m] ,‐10 [knots] < Long.Wind < 0 [knots]

◇Wave Height > 3[m] , Long.Wind < ‐10 [knots]

Suggestion

(c) How Cargo Heating should be taken into account in Virtual Arrival evaluation?

• Daily cargo heating consumption constant throughout voyage?

• Extrapolating actual daily average cargo heating consumption during FULL speed to entire voyage?

(d) Virtual Arrival vs Charter Party compliance

WNI suggested Speed & Consumption figures to meet (revised) ETA maintaining constant and low RPM for fuel saving.

"Ordered Speed &

Consumption"

WNI monitor them real-time.

vs

(e) Consumption - Warranted vs Unwarranted.

Daily BROB

Daily consumption includes warranted and unwarranted

Warranted Others

Consumption Breakdown needed!

…. And further advantages of OSR.

TFMS Seminar in London 2010

LActual track

Recommended Routeallowing 10.4 hours earlier arrival

To Avoid Missing Lay/Can

The vessel (using no Oceanrouteing service) missed Lay/Can due to heavy weather. 10.4 hours earlier arrival could have been possible if Oceanrouteing service had been applied.

An additional cost of one trip time charter vessel was incurred in order to make up for the delay. However, it was later revealed that the vessel would have missed it, even by navigating at her full speed with Oceanrouteing service.

L

Missing Lay/Can

Time chartered vessel to make up

To Avoid Missing Laytime

Recommended RPM and route to realize the least FO consumption meeting the RTA (Required Time of Arrival). Alternate RPM/routes compared with expected weather/sea conditions.

Calculated Total FOC

(MT)

RPM

(RPM of Main Engine)

RTA (Required Time of Arrival)

Eco

EcoSSS

Max15 kts

21

RPM

SPEED

WAVE

CURRENT

WIND FOC

Jeddah to Singapore

RPM rangeMAX 88

Eco 61

SSS MAX 48

SSS MIN 40

Multiple stage RPM suggestion based on operator's procedural requirements