Object data
wood and paint
height 16.4 cm × width 8.6 cm × depth 2.5 cm
Petrus van der Loo
Model of a Slip Hook for Lifeboats
The Hague, United States of America, 1857
Provenance
...; transferred from the Ministerie van Marine (Department of the Navy), The Hague, to the museum, 1883
Object number: NG-MC-637
Copyright: Public domain
Entry
Wooden model of an iron hook, painted grey.
The model consists of two parts: a clasp, which is fastened to the floor of the boat through an eye, and a key with an eye for the tackle of the davit and thickening at the other end. It can pass through the opening of the clasp, which is narrowed by a leg of increasing thickness. A brace on the other leg of the clasp however narrows the opening further and jams the key. Only when the lifeboat is in the water and the weight is removed from the tackle does the brace fall by its own weight and releases the key.
This slip hook designed by Blunt, Lieutenant in the United States Navy,1 was tested between 1857 and 1859 but its main disadvantage was the risk of premature release when on a rough sea.
Scale 1:1.
Literature
J.M. Obreen, Catalogus der verzameling modellen van het Departement van Marine, The Hague 1858, no. 637; G.P.J. Mossel, Handleiding tot de kennis van het schip, Amsterdam 1859, pp. 390-91, fig. 268
Citation
J. van der Vliet, 2016, 'Petrus van der Loo, Model of a Slip Hook for Lifeboats, The Hague, 1857', in J. van der Vliet and A. Lemmers (eds.), Navy Models in the Rijksmuseum, online coll. cat. Amsterdam: hdl.handle.net/10934/RM0001.COLLECT.244452
(accessed 10 November 2024 04:10:15).