The Chandlery on Bent Street. Safety Bay Six, #7

When a development application appears on the chandlery door at the south end of the Bent Street foreshore, the Safety Bay Six recognise the signs: a heritage-listed building, a compressed public comment period, and a sub-floor excavation scheduled in six weeks. What the application doesn't mention - and what Barry, Annie, Rose, Vic, Kath, and Pip are determined to protect - is the hollow floor that Pip documented two years ago, a stone chamber beneath it that pre-dates the Australian colony, and four bronze instrument cases from the 1663 wreck of the Dutch VOC vessel Haringvliet that have never been accounted for.
The case is already complicated when Vic runs the tidal numbers. The same colonial survey fraud that extinguished the Barker family's foreshore fishing rights in 1897 also corrupted the official tidal datum for this section of coast - by 0.73 metres. When a king tide and storm surge align on Thursday, the chamber's shelving doesn't get nine centimetres of water above it. It gets more than a metre.
The ticking clock has nothing to do with the development application. The tide peaks at eleven forty-two. Into this arrives Marta van der Berg: Dutch maritime archivist, descendant of Jan Roberts's younger brother, nineteen years of research into the Haringvliet's sole survivor. She carries her family's complete genealogy, two published papers, and a phrase that has been passed down through eight generations in Zeeland with nobody knowing where it started.
Her lawyer, Bekkers, has filed an interpretive standing application with the Heritage Council. Marta has not told him to. What follows is a three-way negotiation between the gang, a Dutch family's three-hundred-year search, and the Barker family's sixty years of legal patience - with a stone chamber and its contents at stake, and the tide running on its own schedule. In the stone chamber: four bronze instrument cases, a survey theodolite carrying the evidence of the 1897 fraud in its calibration, and an oilskin package that Jan Roberts left for someone to find.
He wrote to his dead mother. He told her he had found what he needed and didn't want to leave. He used a phrase his family had been saying for three hundred years without knowing where it came from. The Chandlery on Bent Street is the seventh book in the Safety Bay Six series - a story about what stays, what gets found, and who was always waiting to find it.