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Glen Sannox: 'Green' ferry has higher emissions than diesel ship

BBC
Summary
Nutrition label

77% Informative

MV Glen Sannox will emit 10,391 equivalent tonnes of CO2 a year compared with 7,732 for Caledonian Isles .

The dual-fuel ferry has more car capacity but requires larger engines which also emit methane.

LNG fuel mostly consists of methane, a greenhouse gas with a greater global warming effect than CO2.

Ferries procurement agency CMAL , which owns the ship, said the comparison was "inaccurate".

Ferry operator CalMac said passenger and vehicle numbers on the Arran route had increased significantly over the past 30 years .

The figures are based on ideal engine running conditions - and CalMac acknowledges that in real-life operations, emissions are likely to be higher.

The analysis also does not factor in so-called "blowdown" emissions of methane which occur every time the ship switches from LNG to running on MGO .

VR Score

80

Informative language

80

Neutral language

38

Article tone

formal

Language

English

Language complexity

52

Offensive language

not offensive

Hate speech

not hateful

Attention-grabbing headline

not detected

Known propaganda techniques

not detected

Time-value

medium-lived

Source diversity

1

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