Third IMO Greenhouse Gas Study 2014

Annex 1 169
Ship class
Table 6 – Ship-weighted auxiliary engine loads, by mode, for selected ship classes, with VBP data
Capacity bin
ME to aux
ratio
# aux
engines
# of aux
running
Load factor
(LF)
Ship-weighted average
auxiliary engine load (kW)
At berth Manoeuvring At sea
Bulk 0–34,999 5.50 3 1.16 0.6–0.7 280 310 190
35,000–59,999 5.50 3 1.10 0.6–0.7 370 420 260
60,000–+ 5.50 3 1.23 0.6–0.7 600 680 420
Chemical tanker 0–4999 2.40 3 1.10 0.5 160 110 80
5,000–19,999 2.40 3 1.10 0.5 490 330 230
20,000–+ 2.40 3 1.23 0.5 1,170 780 550
Cruise 0-9,999 2.50 3 2 0.7 450 580 450
10,000–99,999 2.50 5 4 0.7 4,200 5,460 4,200
100,000+ 2.50 6 4 0.7 11,480 14,900 11,480
General cargo 0–4,999 3.30 3 1.12 0.5–0.6 120 90 60
5,000–9,999 3.30 3 1.04 0.5–0.6 330 250 170
10,000–+ 3.30 3 1.12 0.5–0.6 970 730 490
Oil tanker 0–4,999 3.75 3 1.16 0.5 250 375 250
5,000–9,999 3.75 3 1.16 0.5 375 563 375
10,000–19,999 3.75 3 1.16 0.5 625 938 625
20,000–59,999 3.75 3 1.16 0.5 750 1,125 750
60,000–79,999 3.75 3 1.16 0.5 750 1,125 750
80,000–119,999 3.75 3 1.16 0.5 1,000 1,500 1,000
120,000–199,999 3.75 3 1.16 0.5 1,250 1,875 1,250
200,000–+ 3.75 3 1.16 0.5 1,500 2,250 1,500
For ship classes not previously boarded by VBP, data collected by FMI was used to determine the ratio between
main engines and auxiliary engines; the number of engines assumed to be installed and running was derived
from either the Second IMO GHG Study 2009 or professional judgement. This information was used for the
various ship classes and size bins to develop ship-weighted average auxiliary engine loads in kW. Consistent
with the approach of the Second IMO GHG Study 2009, these loads are applied across all operational modes.
The estimated average auxiliary engine loads for ship classes using FMI data is presented in Table 7.
Ship class
Table 7 – Ship-weighted auxiliary engine loads for selected ship classes, with FMI data
Capacity bin
ME to
aux ratio # engines # of engines
running
Load factor
(LF)
Ship-weighted
auxiliary load
(kW)
Ferry – pax only 0–1,999 7.6 2 1 0.6 185
Ferry – pax only 2,000–+ 3.0 3 1 0.6 525
Ferry – ro-pax 0–1,999 4.9 2 1 0.6 105
Ferry – ro-pax 2,000–+ 4.9 3 1 0.6 710
Liquefied gas tanker 0–49,999 2.9 3 1.10 0.5 240
Liquefied gas tanker 49,999–+ 2.9 3 1.23 0.5 1,710
Miscellaneous – fishing 1 1.5 2 1 0.7 200
Miscellaneous – other 1 2.2 2 1 0.7 190
Offshore 1 2.5 3 1 0.6-.07 320
Service – other 1 2.2 3 1 0.5-0.7 220
Service – tug 1 10.2 2 1 0.5 50
Yacht 1 7.2 2 1 0.7 130
The auxiliary engine loads by mode used in this study are presented in Table 8.