P.S. I found this, citing "ultrasound surveys of the wreck . . . starboard side":
http://en.wikipedia.org/wiki/Sinking_of_the_RMS_Titanic#Effects_of_the_collision
"The iceberg buckled the plates, popping rivets and damaging a sequence of
compartments. Contrary to widespread assumption, the iceberg did not slice the hull.
The impact with the iceberg was long thought to have produced a huge tear in Titanic's
hull, "not less than 300 feet (91 m) in length, 10 feet (3.0 m) above the level of the keel",
as one writer later put it.[40] However, ultrasound surveys of the wreck have found that
the damage consisted of six narrow openings in an area of the hull covering only about 12
to 13 square feet (1.1 to 1.2 m2) in total. According to Paul K. Matthias, who made the
measurements, the damage consisted of a "series of deformations in the starboard side
that start and stop along the hull ... about 10 feet [3.0 m] above the bottom of the
ship."[41]
The gaps, the longest of which measures about 39 feet (12 m) long, appear to have
followed the line of the hull plates. This suggests that the iron rivets along the plate seams
snapped off or popped open to create narrow gaps through which water flooded. An
engineer from Titanic's builders, Harland and Wolff, suggested this scenario at the British
Wreck Commissioner's inquiry following the disaster but his view was discounted.[41]
Titanic's discoverer Robert Ballard has commented that the assumption that the ship had
suffered a massive breach was "a byproduct of the mystique of the Titanic. No one could
believe that the great ship was sunk by a little sliver."[42] Faults in the ship's hull may
have been a contributing factor. Recovered pieces of Titanic's hull plates appear to have
shattered on impact with the iceberg, without bending.[43]
The plates in the central 60% of the hull were held together with triple rows of mild steel
rivets, but the plates in the bow and stern were held together with double rows of
wrought iron rivets which were - according to material scientists Foecke and McCarty -
near their stress limits even before the collision.[44][45] These "Best" or No. 3 iron rivets
had a high level of slag inclusions, making them more brittle than the more usual "Best-
Best" No. 4 iron rivets, and more prone to snapping when put under stress.[46][47] But
Tom McCluskie, a retired archivist of Harland & Wolff, pointed out that Olympic,
Titanic's sister ship, was riveted with the same iron and served without incident for nearly
25 years, surviving several major collisions, including being rammed by a British
cruiser.[48] The Olympic even rammed and sank the U boat U-103 with her bow.
Thereby, the stem was twisted and hull plates on the starboard side were buckled without
impairing the hull's integrity.[48][49]
Above the waterline, there was little evidence of the collision. The stewards in the First
Class Dining Room noticed a shudder, which they thought might have been caused by
the ship shedding a propeller blade. Many of the passengers felt a bump or shudder but
did not know what it was.[50] Those on the lowest decks, nearest the site of the collision,
felt it much more directly. Engine Oiler Walter Hurst recalled being "awakened by a
grinding crash along the starboard side. No one was very much alarmed but knew we had
struck something".[51] Fireman George Kemish heard a "heavy thud and grinding tearing
sound" from the starboard hull.[52]
The ship began to flood immediately, with water pouring in at an estimated rate of 7 long
tons (7.1 t)[53] a second.[54] Second Engineer J. H. Hesketh and Leading Stoker
Frederick Barrett were hit by a jet of icy water in No. 6 boiler room and escaped just
before the room's watertight door closed.[55] This was an extremely dangerous situation
for the engineering staff; the boilers were still full of hot high-pressure steam and there
was a substantial risk that they would explode if they came into contact with the cold
seawater flooding into the boiler rooms. The stokers and firemen were ordered to draw
down the fires and vent the boilers, sending great quantities of steam up the funnel
venting pipes. They were waist-deep in freezing water by the time they finished their
work.[56]"
--
Bub