Droughty Point is a low headland on the eastern shore of the Derwent between Rokeby and Ralphs Bay, south-east of central Hobart. The Marine Life Network guide describes a muddy bottom with sponge life in 2-10 m, shallow close to the south-east point but with rocks extending well out, a few crayfish, and visibility that depends on river silt and is best at high tide. It also records history: an old whaling station at Tryworks Point nearby, and the wreck of the wooden barque Rotuma, lost in 1907 (225 tons).

Little of a wooden wreck survives a century in the Derwent, so expect scattered timbers or fittings at most. The reef is a mix of rocks and mud typical of the lower estuary, supporting sponges, sea squirts and small invertebrates, with flathead, leatherjackets and wrasse, and the ubiquitous Northern Pacific seastars on the mud. It is a modest site, attractive mainly for its history and its proximity to Hobart's eastern suburbs, and useful as a sheltered alternative when Storm Bay is rough.

Offshore from the point lies a deeper trench where a section of Hobart's old floating bridge was sunk, now a more demanding dive in its own right. Documentation is limited to an older guide, so expect to explore and to find conditions very dependent on recent rainfall. A short boat ride from Lauderdale, it can be combined with the floating bridge section offshore for experienced divers, or with a snorkel in the shallows for less experienced members of the group.

Rain in the Derwent catchment in the preceding week is the best predictor of a poor dive here; plan it after a dry spell and on the top of the tide.

Boat access. The Marine Life Network guide names Doran's Road, Lauderdale, as the best boat ramp: from Hobart cross the Tasman Bridge and follow the South Arm Highway to Lauderdale (about 25 minutes). From the ramp, run west across Ralphs Bay neck or around to Droughty Point, about 10-15 minutes.

Anchor in mud off the rocks. The old whaling station at Tryworks Point is nearby.

The Derwent estuary is sheltered from ocean swell, but strong northerly or southerly winds blow along its length and raise a short, steep chop; the Marine Life Network notes the region can become very rough in gales, even in the river. Visibility is the limiting factor: it is usually low (1-5 m) and worst after rain, when the Derwent's tannin-stained, silty floodwater spreads through the estuary. Dive after a dry spell, on a high or flood tide that brings in clearer marine water.

There is a noticeable but generally mild tidal flow. Diving is possible year-round; winter water is cold (9-11 °C). The Marine Life Network notes visibility is clearest at high tide and that the point is exposed to southerly weather.

Anchor off the south-east point, descend to the rocks at 5-8 m and follow them out towards 10 m over the mud, looking for sponges and crayfish. Return along the rocks towards the point.

No regular operator; private boats and club divers from Lauderdale.