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Title: WATER TANK STABILISER TRIALS 1964. THE SECOND SNARK. A TIN SCREW VESSEL OF 50 TONS GROSS AND 75 FT LONG

Reference number: 6074

Date: 1964*

Sound: silent

Original format: 16mm

Colour: col

Fiction: non-fiction

Running time: 15.36 mins

Description: Water Tank Stabiliser Trials on the "Second Snark". Includes general views of the ship in all weathers, and close ups of components such as power unit pumps, pendulum, wave simulator, gyro units, and water stabiliser tanks.

[Please note the viewing copy may display some visible defects such as flicker.]

Footage of the 'Second Snark' can be found at refs 6074, 6076, 6079, 6317, 6324, 6080 and 9245

Shotlist: [shotlisted from VHS, manual control track]

To determine the stabiliser performance the vessel is fitted with gear to produce a controlled roll.. This gear consists of an hydraulically operated 2 ton pendulum controlled by a wave simulator BROWN BROS & CO EDINBURGH present Water Tank Stabiliser Trials 1964 "The Second Snark" A Twin Screw Vessel of 50 tons gross, and 75 ft long men stand aboard deck of the Second Snark. (0.47) hand drawn diagram of boat, illustrating the power unit pumps HRU etc, followed by real footage of man operating same equipment (1.34) diagram, pendulum weight (1.36) To determine the stabiliser performance the vessel is fitted with gear to produce a controlled roll.. This gear consists of an hydraulically operated 2 ton pendulum controlled by a wave simulator gvs same in action pendulum swinging (2.17) The swinging of the pendulum produces a roll of 25 degs on the vessel, as shown gvs same (2.37) diagram showing wave simulator position (2.39) man operates control equipment using button (3.02) diagram showing Gyro Units etc (3.04) c/u Compensated Control System Gyro Unit (3.26) diagram, recording apparatus (3.28) gvs same in c/u (3.59) diagram showing stabiliser tanks "A" TANK PASSIVE men at work on boat fixing these? view of second snark leaving dock and at sea undertgoing stabiliser trials, presumably (5.29) Un-Stabilised Roll gvs same, boat at sea men observing (6.28) Filling Tanks to give a stabilised roll gvs same (7.14) "B" Tanks passive boat in dock, waves crash against harbour wall. Men working on this B tank? (8.39) Un-Stabilised Roll gvs same near shore and then out further in sleety conditions (9.50) Filling Tanks to give a stabilised roll gvs same, man printing off readouts (10.42) snowy conditions, hose is passed over to fill tank? harbour gvs (11.07) "C" Tank Passive and controlled. Un-Stabilised Roll gvs same. readouts being printed off results (12.09) Filling Tanks to give a stabilised roll gvs same boat in sunnier conditions (13.18) men chat together on deck (13.40) ints pendulum swinging (13.55) men chatting again, one wears wollen 'bobble hat' (14.17) approach to shore Leith? where sailing dinghies visible, and docking at harbour. Some men get into car and drive away, they have briefcases some of them. [Engineers/scientists?] (15.36)