Lets see now… SES… called by the French AQL (aeroglisseur a quilles laterales) [sidewall craft], and “Sidewall ACV” [air cushion vessel] by the USSR.

Sweden/Norway: SES 3400 Jet Rider; 2 ~passenger ferrys, operational from 1988. Tech assist from Textron Marine Systems, USA, which passed data from the Sweden/Norway project to the US Navy for its SES Minesweeper study.

Spain; BES-16, SES research project of Bazan, CHACONSA, and the Spanish MOD. A project for a 55 meter helicopter-capable missile patrol boat (BES-50) was started in 1989.

France; many SES programs, from 1980 onward, including a 46 meter 200 ton helicopter-capable patrol boat (Gazelle/Dauphin), a 200 ton passenger ferry, a 4,000-5,000 ton “escort vessel” (2-76mm guns, 1-octuple SAM launcher, 2 quad ASM launchers, 2 twin light cannon, 2 Puma/Sea King class helicopters) or (1-76mm gun, 2 quad ASM launchers, 1 CIWS, 3 Lynx class helicopters).

Germany; MTG (Marinetechnik Gmbh) since 1984, 67 meter 700 ton SES test craft for the West German Navy; Blohm & Voss 36 meter SES test craft launched 1989.

USSR; numerous since at least 1979; including Plamya (26.1 meter 34.5 ton landing craft for 7.3 ton vehicle); a 23.5 meter SES passenger ferry since 1979; Zarnitsa, Orion, & Rassvet (details of these 3 unknown to me); Turist (250-300 seat “Sidewall ACV” passenger ferry & mixed-traffic version [10-15 cars & 100-120 passengers]); LUCH-1 (22.6 ton “Sidewall ACV” passenger ferry for river use, built by Astrakhan shipyard, trials in 1983, for service on “high-wave” rivers such as the Don, Kama, Oka, and Volga); more.

USA; 1988 USN “Intra-Theater Logistics Transport” study for a 111.25 meter 1,800 ton 45 knot RO/RO SES transport (looked a lot like the UK “Round Table” class LST/LSL, but with “high-displacement sidewalls” and inflatable cushions for beaching operations) to carry a full Infantry Battalion or tanks & vehicles up to 453,592 kg (1,000,000 pounds).

All of these craft had rigid sidewalls with inflatable bow & stern skirts.

And that’s just what I photo-copied from a ~1988 Jane’s Fighting Ships 0ver 15 years ago… imagine how many could be found now?