Stern launching ramp

USCG long range interceptor using the stern launching ramp of the USCGC Bertholf -- a frigate sized cutter.

Aerial view of a USCG Marine Protector showing its short range prosecutor nestled in its stern launching ramp.

Some modern patrol vessels are equipped with a stern launching ramp, for deploying smaller rescue or pursuit boats without requiring the parent ship to first come to a halt.^[1][2][3] Typically the smaller craft are powered by water-jets, and can drive themselves up the ramp by their own power.

The stern launching ramps on the United States Coast Guard's Marine Protector cutters require only a single crewmember to remain on deck when its short range prosecutor boat is deployed or retrieved.^[4]

References

1. "Austal launches Malta patrol boats". Marine Log. 2009-10-05. A stern launching ramp allows the safe deployment and retrieval of a rigid hull inflatable boat and dive operations are also supported via low-to-the-water platforms located aft.
2. "Austal patrol boats show their capabilities". Marine log. 2009-11-27. Retrieved 2011-12-02. A stern launching ramp allows the safe deployment and retrieval of a rigid hull inflatable boat and dive operations are also supported via low-to-the-water platforms located aft. mirror
3. Philip Ewing (2008-06-27). "New cutter struts at Inner Harbor". Navy Times. Retrieved 2011-12-02. From the new muzzle-velocity radar in its 57mm deck gun on the foc’sle to the boat-launch ramp at the stern, the Bertholf brings a new set of capabilities to the cutter fleet, Stadt said. mirror
4. Alix Wood (2013). Serving in the Coast Guard. The Rosen Publishing Group. ISBN 9781477714089. Boarding parties can be launched while the vessel is underway using the cutter's stern launching ramp.