M/S Willem Jan
| Route | - |
| IMO | ? |
| Building year | 1933 / 1946 |
| Building yard | Koninklijke Maatschappij De Schelde, Netherlands (#198) |
| Owner | Tender Service Scheveningen BV |
| Operator | ? |
| Length | 48,90 m / 55,12 m |
| Breadth | 8,85 m |
| Draft | 2,25 m |
| GT | 342 / 365 |
| Machinery | 1 * Schelde-Sulzer |
| Speed | 9,5 kn. |
| Number of passengers | 200 |
| Number of beds | 0 |
| Number of cars | ? / 10 / 0 |
| Lanemetres | ? |
| Port of registry | ? |
| Flag | Netherlands |
| Former names | Jupiter (1972-?) - ? Oosterschelde (1946-1972) - PSD Ooster-Schelde (1933-1946) - PSD |
| Former owners | Rederij Vrolijk (1975-?)
? (1968-1975) Provinciale Stoomboot Diensten in Zeeland (1933-1968) |
| Sister ships | Estrella, Perseverence |
| Notes | - |
- M/F Ooster-Schelde
Photo: Hans Neels collection (Zierikzee)