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Technical Data

Production period1947-1952
L.o.a. [m]5.25
Beam [m]1.70
Number of boatsca. 1.500

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linkBrochures, flyer
linkList of serial numbers of known boats (147)


The camping boat S1M was a contract manufacturing for the company Archimedes, which in 1941 became part of the Elektrolux Group. The Electrolux group, which made the Archimedes outboards for the Swedish Navy during the war, was looking for a civilian market for these outboards. Since no suitable boats were available, they developed their own boat type.
The result was the "Skärgårdsbåt S1M", commonly known as the "Electrolux boat".

According to the delivery lists of the shipyard Örnmaskiner AB built three different models: P510 (5.1 m in length), P525/S1M (5.25 m in length) and P540 (5.4 m in length). The ships were delivered mainly to Archimedes in Stockholm (in the lists "Stockholm Norra" or "Sundbyberg"). Several times the boats were previously provided to other companies as a demonstration boat and then came back to the shipyard.
In the available books of the shipyard, the boat is listed as "P525 = S1" from the beginning of 1950. In the course of the year, the designation changes to "S1-M = 525" and finally to "S1". Later, the designations are used alternately.

The hulls of the boats were made in clinker construction of eleven mahogany planks on dampened frames made of oak.

With the Archimedes B-22 (10-12 hp) at the stern, the boat reached a speed of about 10 knots.


Photos and images

S10M: image 1 of 6 thumb S10M: image 2 of 7 thumb S10M: image 3 of 7 thumb S10M: image 4 of 7 thumb S10M: image 5 of 7 thumb S10M: image 6 of 7 thumb S10M: image 7 of 7 thumb
In some cases, further images of registered ships are available for registered users.
Unless otherwise stated, the images used on this page are subject to copyright. Commercial use without written consent is not permitted. The only exceptions to this copyright are the images provided by the owners of their ships. In this case, the copyright belongs to the respective owners.


No. of cylinders2
Compression ratio
Engine output[kw/(HP)]7 - 9/
(10 - 12)
EnginesEngine output
Archimedes B227 - 9/
(10 - 12)


Brochures, flyerLowHi
Penta Campingbåt typ PM-525 - Brochure 1950sePenta Campingbåt typ PM-525
Anniversary brochure Electrolux - Brochure 1994seAnniversary brochure Electrolux Download only for registered users
Complete brochuresLowHi
Archimedes - Complete brochure 1951sePDF - Download only for registered users
Technical brochures - ManualsLowHi
Archimedes outboard engineseDownload only for registered users
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