Marine replenishment type I (MNL I) The Type I naval replenishment lighter (MNL) was created due to the military demand for a sea-going replenishment and landing vehicle that was able to get from Germany to the Mediterranean via the southern French canals and rivers, including the Rhine-Rhone Canal. The existing naval ferry piers (MFP) and naval artillery lighters (MAL) were denied this possibility of transfer because their dimensions exceeded the Freycinet dimensions of the locks on this waterway (length 39.0 m, width 5.2 m, draft 1.8 m). The MNL was driven by diesel engines of the type that was already used on the MFPs. As on the MALs, only two motors were installed, while the MFPs were driven by three machines.
The MNL was not unlike the MFP in terms of its external appearance. However, even greater emphasis was placed on simple and quick construction, which is also evident from the comparison of the manufacturing costs
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