Another BPB product was the 64' High Speed Launch, built for the RAF. This was essentially the same hull as the 60' MTB, but four feet longer. As with most craft, they evolved quickly once WWII began. Initially, they were unarmed and had bright finished superstructures as depicted by HSL107. Once the war began, they sported black hulls and, depending on their station, dark gray or yellow upperworks.
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