I. *** Overview

(1) Really big picture
(A) Complete CI lay overview: http://ci.oceanobservatories.org/ (lay overview is not particularly deep)
(B) Program-level lay overview: http://www.oceanleadership.org/programs-and-partnerships/ocean-observing/ooi/
(C) Technical page with overview materials: http://ci.oceanobservatories.org/spaces/display/WS/CI+Workshops

On this page (1.C) are many interesting sections, presented below in some order of usefulness.

(2) Results and Background Material/OOI Science and Design Context at the bottom:
(A) Text overview of CI: http://ci.oceanobservatories.org/spaces/download/attachments/8388632/OOI_CI-Overview-20070919.pdf
(B) Technical paper: http://www.oceanobservatories.org/spaces/download/attachments/14712839/IEEE-Oceans09_20090125-018.pdf
(C) Scientist operational scenario: http://ci.oceanobservatories.org/spaces/download/attachments/8388632/DayInTheLifeOfScienceUser-ConceptOfOperations.pdf
(D) Instrumentation operational scenario: http://ci.oceanobservatories.org/spaces/download/attachments/8388632/Instrument+Life+Cycle+Concept+of+Operationsv1r00.pdf
(E) Data operational scenario: http://www.oceanobservatories.org/spaces/download/attachments/21205028/2115-00017_Data_LifeCycle_ConOps_CI.pdf

(3) Completed Pre-Construction Meetings and Workshops/Team Meetings
(A) Kickoff Meeting: http://ci.oceanobservatories.org/spaces/display/WS/CI+Project+Kick-Off+Meeting
(B) Life Cycle Objectives Review meeting: Release 1 LCO Review

Item 3A has the latest public presentations. The attachment list is long and not always perfectly linked, but for example you can see the Sensing and Acquisition Subsystem Review presentation:
(4) http://ci.oceanobservatories.org/spaces/download/attachments/18907985/2009-09-09_SA-Subsystem.pdf?version=2

Also from this page you will see a link to the prototyping page, which lists the type of ongoing prototypes:
(5) http://ci.oceanobservatories.org/spaces/display/CIDev/Prototyping