(uickTime players can be found here: )
 (DivX codecs can be found here)

Test runs

Serafina fighting the currents in an approx. 2 kn's surface stream. The small submersible is still manoeuvrable and responsive.

Serafina in surface currents also available as: mpeg-4 (large screen, high quality, 48 MB), mpeg-4 (large screen, low quality, 5 MB), mpeg-4 (small screen, high quality, 17 MB), mpeg-4 (small screen, low quality, 2 MB), QuickTime: mpeg-1 (5 MB), QuickTime: Sorensen3 (8 MB), QuickTime: H.263 (6 MB)

Serafina underwater shots also available as: mpeg-4 (large screen, high quality, 84 MB), mpeg-4 (large screen, low quality, 8 MB), mpeg-4 (small screen, high quality, 23 MB), mpeg-4 (small screen, low quality, 3 MB), avi: DivX (small screen, high quality, 15 MB), avi: DivX (small screen, low quality, 6 MB), QuickTime: mpeg-1 (16 MB), QuickTime: Sorensen3 (9 MB), QuickTime: H.263 (9 MB)

Some underwater shots of Serafina, demonstrating general manoeuvrability and posture stabilization.

Underwater fly-by's also available as: mpeg-4 (large screen, high quality, 19 MB), mpeg-4 (large screen, low quality, 2 MB), mpeg-4 (small screen, high quality, 4 MB), mpeg-4 (small screen, low quality, 0.5 MB), QuickTime: mpeg-1 (5 MB), QuickTime: Sorensen3 (2 MB), QuickTime: H.263 (1 MB)		Into the sun shot also available as: mpeg-4 (large screen, high quality, 19 MB), mpeg-4 (large screen, low quality, 2 MB), mpeg-4 (small screen, high quality, 6 MB), mpeg-4 (small screen, low quality, 1 MB), QuickTime: mpeg-1 (5 MB), QuickTime: Sorensen3 (2 MB), QuickTime: H.263 (2 MB)
These two underwater shots of Serafina are by-products of other experiments and are included in this web-site for their plain beauty only.

This test demonstrates accurate and fast active posture stabilization. Strong external disturbances are compensated easily.

Active stabilization also available as: mpeg1, mpeg4, sorensen3, DivX4, XviD

Fast stabilized turns also available as: mpeg1, mpeg4, sorensen3, DivX4, XviD

The demonstration on the left shows the employment of active stabilization for fast turns, which then can be easily controlled (the roll axes tends to be quite unstable during fast turns otherwise).

Fast changes in orientation (roll and pitch +/- 180°) and immediate re-stabilization on the right.

Flipping stabilized orientations also available as: mpeg1, mpeg4, sorensen3, DivX4, XviD

Serafina's maiden dive (remote controlled) also available as: mpeg1, mpeg4, sorensen3, DivX4

This maiden dive took place in September 2003. Everything is operated manually and by remote. No loss in pressure, all motors and controllers were operational, and (even though it was not carefully trimmed at the time) the boat proved to be extremely agile and fast right from the start.