Design and Development
The LE 111's lineage sits within the broader Lemsteraak story, where hull construction moved from wood to riveted and later welded iron and steel through the early 20th century. The Alderaast LE111 was built in the winter of 2015–2016 by SRF in Harlingen, with Chris Beuker developing the concept and supervising the build. The design itself came from Martijn van Schaik, who is associated with Hoek Design — the studio that has refined over 250 Lemsteraken using in-house velocity prediction tools since the early 1980s. At 12.85 meters, this Visserman is 60 cm longer than Schaik's 12.25 m designs such as Eb en Vloed, marking a deliberate stretch of the established proportion.
Construction
Rather than adopt a uniform 5 mm steel plate, the Alderaast LE111 was assembled from varied plate thicknesses, a choice that tailors material to structural demand instead of applying a single standard. The centerboard profile is notably slender, a feature observed when sailing heeled. Construction remained in welded steel, consistent with the later phase of Lemsteraak building.
Rig and Handling
The performance brief for the LE 111 emphasized a fast, maneuverable yacht that answers quickly in light air. That target was pursued through analysis: nine design variants were examined with Multisurf and Winpower software for resistance, seaway behavior, and sailing properties, and three models were then taken further with Computational Fluid Dynamics to visualize hull resistance. The resulting hull is relatively slender underwater with little wetted surface, and testers recorded lower initial stability alongside the quickness. On the water, the aak accelerates very rapidly in gusts, sprinting away as soon as breeze fills. The slender underwater hull with little wetted surface helps explain the reported light-air responsiveness and acceleration.
Refits and Ownership
The Alderaast LE111 passed from Jellesma Beheer B.V. of Lemmer, which held it from 2016 to 2025, to Wallisuma B.V. of Naarden from 2025 onward. The ownership trail is continuous and recent, with the original build supervision by Beuker the only noted oversight beyond the transfer. The varied plate-thickness construction and slender centerboard are design characteristics of the hull.
The Verdict
The Lemsteraak LE 111 Visserman Uitvoering is a purpose-stretched, software-refined take on the open fisherman aak, trading some initial stability for a slim, low-wetted-surface hull that is quick to accelerate and handy in light wind. Its welded-steel shell built from mixed plate gauges shows a modern engineering sensibility applied to a traditional layout.
Pros
- Slender, low-wetted-surface hull with documented light-air acceleration
- Modern CFD and VPP-informed design process over nine variants
- Open Visserman cockpit true to working-boat heritage
- Continuous, recent ownership record from 2016
Cons
- Lower initial stability than fuller Lemsteraak forms
- No detailed accommodation or systems specifications published
