Grundel 735
Basic data
| Category: | Sailboat |
| Year of construction: | 1962 |
| Length: | 735 cm |
| width: | 245 cm |
| Depth: | 45 cm |
| Material: | Steel |
| Motorization: | Nanni |
| Berth: |
Waspik, Netherlands
|
Specifications
Grundel 735 flat-bottom for sale – characterful steel classic with shallow draft and bow thruster
The 1962 Grundel 735 is a compact, steel flat-bottom boat with a distinctly classic profile and practical dimensions for those who enjoy cruising inland waterways, lakes, canals and rivers. With a length of 7.35 metres and a beam of 2.45 metres, this type of Grundel offers a pleasant balance between manoeuvrability and usable space on board. The vessel is particularly interesting for water sports enthusiasts looking for an authentic flat-bottom to take weekend trips, anchor quietly in nature areas and cruise where many other boats have to turn back. The shallow draft of approx. 45 cm is a major plus, especially in shallow areas and sheltered creeks.
Grundel 735 now in the online auction. Anyone can bid up to and including 16 March 2026.
Design and handling: flat-bottom access to shallow waters
A Grundel is built for Dutch inland waters: shallows, changing banks and narrow passages. Thanks to the flat-bottom construction and limited draft, this Grundel 735 is well suited to cruising areas such as the Biesbosch, where a deeper-draft vessel offers less freedom. The air draft of approx. 7.50 metres also makes her suitable for many routes with bridges, depending on superstructure and load. Steering is done outside with a tiller and a single rudder, providing direct contact with the boat and a traditional boating experience.
Choosing a flat-bottom also means choosing an active way of sailing. When sailing this type of vessel, leeboards are used and adjusted depending on course and wind, making the sailing dynamic and giving a strong feel for trim and balance. At the same time, this boat is also perfectly suitable to use as a motorboat for relaxed trips, locks and stretches with current.
Engine and performance: Nanni diesel inboard with electric start
On board is a Nanni inboard diesel engine (year of manufacture 1994) with 21 hp, 3 cylinders and electric start. With approx. 450 running hours, relatively limited use has been recorded. This engine setup suits the character of a 7.35-metre steel flat-bottom: sufficient power for smooth manoeuvring, holding course on rivers and comfortable cruising on inland waters. The stated cruising speed is around 12 km/h with a maximum of approx. 15 km/h, which fits recreational use and the common speed limits on many waterways. The diesel tank has a capacity of about 50 litres, which in practice can provide a usable range for weekend and day trips, depending on cruising style and conditions.
Manoeuvring and ease: electric bow thruster (2023)
A key modern advantage on this classic Grundel is the electric bow thruster, installed in 2023. This makes a noticeable difference when docking, departing and turning in tight marinas or locks. Where a flat-bottom with tiller steering and windage can sometimes require extra attention at low speed, the bow thruster adds control and peace of mind—especially for those who often cruise solo or regularly visit busy guest harbours.
Accommodation and stay: compact, functional and atmospheric
Inside, headroom is approx. 1.40 metres, meaning the interior is mainly designed for sitting and staying, not standing. This suits the type of vessel and its build year: a cosy cabin where you can sit sheltered with several people. There are two fixed berths and two additional berths possible, allowing overnight stays for up to four people. Mattresses and a cooker are on board, making the boat suitable for simple weekend trips and short holidays. There is a water tank of approx. 100 litres and a small tap for basic use. There is no toilet on board, which is important to consider if you plan longer trips or cruise with family.
Equipment and systems: practical for inland waters and weekend use
In terms of basic equipment, there is a VHF radio for communication on the water. The onboard system is 12V and there are two batteries with a total capacity of approx. 150 Ah, supported by an alternator and battery charger. On deck, there are tarpaulins, fenders and lines, making the boat immediately usable for a berth and guest harbours. There is one anchor with line attachment, suitable for use on sheltered inland waters.
Maintenance and recent work: out of the water in 2025
The vessel was taken out of the water in 2025 for maintenance, during which antifouling was also applied. Documentation relating to the inboard engine is available for interested buyers, which is useful for insight into specifications and history.
Who is this Grundel 735 suitable for?
This steel Grundel 735 is especially appealing to lovers of classic flat-bottom boats who are looking for the charm of traditional cruising and want to explore areas where shallow water plays a role. Think nature trips, weekend getaways on rivers and lakes, or quiet anchoring in sheltered spots. You get a characterful vessel with a strong inboard diesel, a modern bow thruster for easier manoeuvring, and a simple, functional cabin for overnight stays. If onboard comfort is less important to you than the boating experience, access to shallow waters and the authentic Grundel feel, this Grundel 735 is a particularly fitting choice.
ADDITIONAL INFORMATION
- We advise making use of the viewing day.
- The boat is on the shore.
- This boat is sold without a trailer.
- This boat is sold under general auction conditions.
- This concerns a public auction, which means that the purchase cannot be returned based on the legal right of withdrawal.
| Brand | Grundel |
| Type | 735 |
| Length | 735 |
| Width | 245 |
| Depth | 45 |
| Clearance height | 750 |
| Year of construction | 1962 |
| Material | Steel |
| Number of sleeping places (fixed) | 2 |
| Number of sleeping places (extra) | 2 |
| Standing height indoors | 140 |
| Last antifouling treatment | 2025 |
| Control | Tiller |
| Location control | Outside |
| Rudder | Single |
| Cooker | |
| Curtains | |
| Water tank capacity in liters | 100 |
| Toilet | N/A |
| Dinghy | No |
| Is a trailer included? | No |
| Anchor(s) | 1 |
| Anchor attachment | Line |
| Windlass | N/A |
| Deck cover(s) | |
| Fenders and lines |
| Number of engines | 1 |
| Is the engine operational | The engine is operational |
| Start typing | Electric |
| Maximum speed | kilometers per hour | 15 |
| Engine type | Inboard |
| Brand motor | Nanni |
| Model engine | 3,9 HE |
| Power (hp) | 21 |
| Number of cylinders | 3 |
| Year of construction of the engine | 1994 |
| Engine hours | 450 |
| Fuel | Diesel |
| Tank capacity in liters | 50 |
| Bow thruster | Electric |
| Number of batteries present | 2 |
| Total battery capacity | 150 |
| Battery charger | |
| Alternator | |
| 12V |
Grundel 735 flat-bottom for sale – characterful steel classic with shallow draft and bow thruster
The 1962 Grundel 735 is a compact, steel flat-bottom boat with a distinctly classic profile and practical dimensions for those who enjoy cruising inland waterways, lakes, canals and rivers. With a length of 7.35 metres and a beam of 2.45 metres, this type of Grundel offers a pleasant balance between manoeuvrability and usable space on board. The vessel is particularly interesting for water sports enthusiasts looking for an authentic flat-bottom to take weekend trips, anchor quietly in nature areas and cruise where many other boats have to turn back. The shallow draft of approx. 45 cm is a major plus, especially in shallow areas and sheltered creeks.
Grundel 735 now in the online auction. Anyone can bid up to and including 16 March 2026.
Design and handling: flat-bottom access to shallow waters
A Grundel is built for Dutch inland waters: shallows, changing banks and narrow passages. Thanks to the flat-bottom construction and limited draft, this Grundel 735 is well suited to cruising areas such as the Biesbosch, where a deeper-draft vessel offers less freedom. The air draft of approx. 7.50 metres also makes her suitable for many routes with bridges, depending on superstructure and load. Steering is done outside with a tiller and a single rudder, providing direct contact with the boat and a traditional boating experience.
Choosing a flat-bottom also means choosing an active way of sailing. When sailing this type of vessel, leeboards are used and adjusted depending on course and wind, making the sailing dynamic and giving a strong feel for trim and balance. At the same time, this boat is also perfectly suitable to use as a motorboat for relaxed trips, locks and stretches with current.
Engine and performance: Nanni diesel inboard with electric start
On board is a Nanni inboard diesel engine (year of manufacture 1994) with 21 hp, 3 cylinders and electric start. With approx. 450 running hours, relatively limited use has been recorded. This engine setup suits the character of a 7.35-metre steel flat-bottom: sufficient power for smooth manoeuvring, holding course on rivers and comfortable cruising on inland waters. The stated cruising speed is around 12 km/h with a maximum of approx. 15 km/h, which fits recreational use and the common speed limits on many waterways. The diesel tank has a capacity of about 50 litres, which in practice can provide a usable range for weekend and day trips, depending on cruising style and conditions.
Manoeuvring and ease: electric bow thruster (2023)
A key modern advantage on this classic Grundel is the electric bow thruster, installed in 2023. This makes a noticeable difference when docking, departing and turning in tight marinas or locks. Where a flat-bottom with tiller steering and windage can sometimes require extra attention at low speed, the bow thruster adds control and peace of mind—especially for those who often cruise solo or regularly visit busy guest harbours.
Accommodation and stay: compact, functional and atmospheric
Inside, headroom is approx. 1.40 metres, meaning the interior is mainly designed for sitting and staying, not standing. This suits the type of vessel and its build year: a cosy cabin where you can sit sheltered with several people. There are two fixed berths and two additional berths possible, allowing overnight stays for up to four people. Mattresses and a cooker are on board, making the boat suitable for simple weekend trips and short holidays. There is a water tank of approx. 100 litres and a small tap for basic use. There is no toilet on board, which is important to consider if you plan longer trips or cruise with family.
Equipment and systems: practical for inland waters and weekend use
In terms of basic equipment, there is a VHF radio for communication on the water. The onboard system is 12V and there are two batteries with a total capacity of approx. 150 Ah, supported by an alternator and battery charger. On deck, there are tarpaulins, fenders and lines, making the boat immediately usable for a berth and guest harbours. There is one anchor with line attachment, suitable for use on sheltered inland waters.
Maintenance and recent work: out of the water in 2025
The vessel was taken out of the water in 2025 for maintenance, during which antifouling was also applied. Documentation relating to the inboard engine is available for interested buyers, which is useful for insight into specifications and history.
Who is this Grundel 735 suitable for?
This steel Grundel 735 is especially appealing to lovers of classic flat-bottom boats who are looking for the charm of traditional cruising and want to explore areas where shallow water plays a role. Think nature trips, weekend getaways on rivers and lakes, or quiet anchoring in sheltered spots. You get a characterful vessel with a strong inboard diesel, a modern bow thruster for easier manoeuvring, and a simple, functional cabin for overnight stays. If onboard comfort is less important to you than the boating experience, access to shallow waters and the authentic Grundel feel, this Grundel 735 is a particularly fitting choice.
VIEWING DAY INFORMATION
- The viewing day of this Grundel 735 is on Saturday 14 March 2026 van 10:00 until 12:00 in Waspik (NL).
ADDITIONAL INFORMATION
- We advise making use of the viewing day.
- The boat is on the shore.
- This boat is sold without a trailer.
- This boat is sold under general auction conditions.
- This concerns a public auction, which means that the purchase cannot be returned based on the legal right of withdrawal.
| Brand | Grundel |
| Type | 735 |
| Length | 735 |
| Width | 245 |
| Depth | 45 |
| Clearance height | 750 |
| Year of construction | 1962 |
| Material | Steel |
| Number of sleeping places (fixed) | 2 |
| Number of sleeping places (extra) | 2 |
| Standing height indoors | 140 |
| Last antifouling treatment | 2025 |
| Control | Tiller |
| Location control | Outside |
| Rudder | Single |
| Cooker | |
| Curtains | |
| Water tank capacity in liters | 100 |
| Toilet | N/A |
| Dinghy | No |
| Is a trailer included? | No |
| Anchor(s) | 1 |
| Anchor attachment | Line |
| Windlass | N/A |
| Deck cover(s) | |
| Fenders and lines |
| Number of engines | 1 |
| Is the engine operational | The engine is operational |
| Start typing | Electric |
| Maximum speed | kilometers per hour | 15 |
| Engine type | Inboard |
| Brand motor | Nanni |
| Model engine | 3,9 HE |
| Power (hp) | 21 |
| Number of cylinders | 3 |
| Year of construction of the engine | 1994 |
| Engine hours | 450 |
| Fuel | Diesel |
| Tank capacity in liters | 50 |
| Bow thruster | Electric |
| Number of batteries present | 2 |
| Total battery capacity | 150 |
| Battery charger | |
| Alternator | |
| 12V |
