These proportions place her among the compact coastal cruisers of the late 1970s. The published design data presents her as a deliberate small-boat expression of van de Stadt’s balanced, easily driven hull approach.
Design and Construction
The Oceaan 25 has a solid-fiberglass hull and solid-fiberglass deck. Her length-to-beam ratio is 2.68, a relatively narrow figure for a boat of 24.84 feet overall. She has less beam for her length than a beamy daysailer.
The underwater body has about 226 square feet of wetted surface, and the immersion rate is about 800 pounds per inch. Depending on load, draft ranges from 4.92 to 5.22 feet, allowing her to enter most marinas at that draft.
Her capsize-screening ratio is 2.19, while the comfort ratio is 17.13. These figures are consistent with a light-displacement coastal design rather than an offshore passagemaker.
Rig and Handling
The Oceaan 25 carries a fractional-sloop rig. The jib and genoa sheets are 24.8 feet long and 3/8 inch in diameter. The mainsheet is 62.1 feet long, also at 3/8 inch, while the spinnaker sheet measures 54.6 feet and has the same 3/8-inch diameter. These are the boat’s specified sheet lengths and diameters.
Those dimensions describe a modest rig with short, manageable control lines, suited to a crew handling the boat without powered winches. With her fin keel, skeg-hung rudder, and 21.3-foot waterline, the Oceaan 25 has a calculated hull speed of 6.18 knots.
Verdict
The Oceaan 25 is a compact van de Stadt cruiser with a clearly defined hull character: relatively narrow beam for her length, modest wetted surface, and a load-dependent draft that keeps most marinas accessible. Her known rig data is unusually precise and useful.
Pros
- Designed by recognized Dutch naval architect Ericus Gerhardus van de Stadt.
- Solid-fiberglass hull and deck construction.
- Draft of 4.92–5.22 feet allows access to most marinas, depending on load.
- Well-documented sheet dimensions for the fractional-sloop rig.
Cons
- The light comfort ratio of 17.13 limits her to coastal use.
