Oslofjord - A powerboat and a sailing trimaran collide in the Oslofjord; the motorboat goes down
In the busy inner Oslofjord off Nesodden, a daycruiser and a sailing trimaran collided near Fagerstrand. Police attributed negligence to the motorboat's operator. The powerboat sank; the trimaran stayed afloat and two people were lightly hurt.
What happened.
On 3 August 2025 a daycruiser motorboat and a sailing trimaran collided in the busy inner Oslofjord near Fagerstrand, off Nesodden, Norway. Police said the motorboat operator acted negligently and struck the sailing vessel. The motorboat sank; the trimaran stayed afloat. Three people were involved and two were lightly injured, with no reported pollution.
On Sunday 3 August 2025, in the crowded summer waters of the inner Oslofjord off Nesodden, a daycruiser motorboat and a sailing trimaran collided near Fagerstrand. Reports differ a little on the exact geometry — one describes the sailboat's bow driving into the side of the motorboat — but the police account is clear that the motorboat's operator acted negligently and ran into the sailing vessel. The powerboat came off worst: it sank and settled underwater, while the trimaran stayed afloat. Three people were caught up in the collision and two suffered minor injuries; police reported no fuel leak or pollution from either boat. It is a textbook inshore-traffic collision. Under the collision-avoidance rules a power-driven vessel must keep clear of a vessel under sail, yet a sailing crew cannot rely on that alone in close, busy water: speed, a poor lookout and the sheer density of boats on a fine summer Sunday put two hulls in the same piece of water. The saving grace here was that the injuries were minor and neither boat leaked — but a sunk powerboat shows how fast a moment's inattention becomes a wreck.
What it teaches.
- 1A power-driven vessel must keep clear of a vessel under sail — but the rule does not steer the other boat. Police blamed the motorboat operator here, yet the sailing crew still ended up in a collision. In busy inshore water, keep a constant lookout and be ready to take your own avoiding action rather than stand on into danger.
- 2Crowded, fine-weather waters are where collisions happen. This was a summer Sunday in the inner Oslofjord. Assume other skippers are distracted, make yourself obvious, slow down in traffic, and treat a close-quarters situation as yours to solve regardless of who has right of way.
Where this comes from.
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