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Six Phases of the Sinking - Ramp
always leaking 1. The ship was apparently underway when the accident occurred. The forward ramp on the car deck was always leaking a little, so water flowed in in severe weather (Source - the German Group of Experts) in spite of efforts to make it tight by various means. A watchman was always checking the ramp. To enable the leaking water to float out the crew always operated the ship with a small, starboard list and stern trim. Therefore the small amounts of water that leaked in at the bow ramp flowed aft along the starboard side of the car deck due to the stern trim and flowed out through the scuppers. This was 'normal' practice. The pilots often stepped into water when they embarked on the ship at arrival Sweden. The watchman was at the ramp all the time until about 01.02 hrs. He did not observe any explosions at the ramp/visor, etc., so the suggestions that bombs exploded at the ramp/visor cannot be correct. But explosives were apparently used later to remove the visor from the ship under water. Leakage develops 2. At 00.50-00.55 hrs the writer thinks the ship suffered hull damage - maybe in way of the starboard stabilizer fin box room or the starboard sewage tank compartment and the room was flooded. The inflow might have been as little as 50-100 ton/minute, i.e. the ship started to sink! The effective open area of the damage was about 0.2 m². Apparently the watertight doors to the two forward or aft spaces were open - a corridor space - so that three compartments were flooded. Alternatively (less likely) the starboard shell plating fractured in the bilge strake at the pool area. It was a rust trap. Water always spilled out from the swimming pool in the pool compartment and ended up in the bilges, where the lower frame brackets became rusty (even if the pool is located on the port side). The crew knew that something was wrong from
the start of the accident, i.e. 00.50-00.55 hrs
and 3/E Treu probably was out of the control room
to check. They reported to the bridge that the
ship was leaking - that several compartments on
deck 0 were flooded. It is assumed that the engine
crew started the bilge pumps (one crew member,
Sillaste, said so). In spite of this, water started
to rise up on deck 1 at about 00.55-00.58
hrs (through the down flooding hatches in deck 1
and the stairwells down to deck 0), where it was
noted by some passengers in the passenger
compartments on deck 1 - there was water in the
centre corridor. The passengers also noted that the
watertight doors on deck 1 were open. The situation
was then as seen in the plan right - grey colour
indicates flooded spaces: The sewage tanks room, the corridors and the
stabilizer room are assumed flooded and the
watertight doors to the swimming pool room forward
and to the generator room aft are closed. Survivor
CÖ was in his cabin above the sewage tanks
room. The engine crew was in the engine room
starting the bilge pumps. The official investigators apparently modified
the statements of the crew to blame the accident on
the visor.
The final Sinking
In order to verify the above scenario an associate of the writer informally inspected in August 2000 a ferry belonging to the owners of the 'Estonia' between Tallinn and Stockholm. All watertight doors below the car deck were open at sea. The Swedish Maritime Administration was duly informed - and decided to do nothing (except that the Director General - Mr. Anders Lindström - shortly afterwards decided to leave his position for other duties). It is sad that all parties do not encourage simple seamanship. Then similar accidents as the 'Estonia' will occur again, and again. It is quite simple to verify the above scencario. Many modern ferries have sophisticated stability computers that not only calculates intact stability but also damage stabiliy, e.g. the Finnish Napa Onboard range of computers. The latter can be programmed to calculate the stability with flooded compartments of the watertight hull and the weathertight superstructure (but not the deck house). Thus you only have to start with an original, intact condition and then add water to the compartments you assume damage or flooded. The Napa Onboard immediately calculates the relevant new equilibrium and the relevant new particulars, draught, trim, displacement, GoM, GZ and range, list, etc. It will inform when the margin line is submerged and when progressive flooding starts.The Napa Onboard computer can also be used to show what happens with water in the superstructure - at a certain angle of list the ship capsizes. Evidently the Napa Onboard computer assumes that the deck house does not contribute with bouyancy to float the ship - only to provide bouyancy to extend the range of positive heeling arm GZ (if the deck house is weathertight - which was not the case of the 'Estonia'). Why was the real cause of the 'Estonia' sinking covered up? Probably for multiple reasons: to protect the newly 'democratic' and poor Estonian state, where Finland and Sweden control 60-70% of all new investments and, to protect the Swedish Maritime Administration and its incompetent staff and the Finnish Coast Guard that did nothing to assist the sinking ship and knew that the was not seaworthy before the accident. The states of Estonia, Finland and Sweden had many reasons to manipulate the investigation. And the real culprits were happy - they got away and could retire to sunny, southern Europe. Contact anders.bjorkman@wanadoo.fr
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