Concerns over cruise ship emissions in Lyttelton Harbour prompted an official investigation by Environment Canterbury, and two Members of Parliament say they understand why some locals are frustrated.

The regional council confirmed it would be looking into air emissions from a cruise ship docked in Lyttelton on Friday, after some residents raised concerns about visible smoke and potential air quality issues.

Labour List MP Dr Tracey McLellan said she recognised that, on occasion, a small group of residents could appear to dominate the conversation.

“They’re a very passionate group of advocates who will always be looking out for what’s best for Lyttelton.

“If there’s anything to be seen, then that’s the job of ECan – and they’ve got a pretty good track record of at least testing properly, finding out what’s going on. The difficult part is what’s the solution? Particularly when people are talking about poison and air quality, it’s something that really gets people quite exercised.”

National MP for Banks Peninsula, Dr Vanessa Weenink, said the cruise ship photos circulating online were understandably upsetting to some residents.

“When I see pictures like that, I can understand why people have quite a reaction – because it looks pretty awful,” she said. “What that actually means in terms of particulate matter and toxins? I think it will be useful to hear what Environment Canterbury finds.”

Weenink acknowledged the economic value cruise ships bring, particularly in a region that relies on tourism, but said it’s fair for locals to question what they get in return.

“It is important for economic growth to have good tourism in this region, and we’ve seen a boost to tourism from cruise ships. At the same time, the people of Lyttelton are wondering, what’s this worth for us?”

She added, “They have good advocates over there – very passionate about their community. I love talking with the people of Lyttelton. It’s a great little spot.”