This_is_SEAFAC.pdf

This Is SEAFAC

Bill Fagan

Branch Head Code 715, Trial Directing and Facilities

Naval Surface Warfare Center, Carderock Division, NSWCCD

DISTRIBUTION STATEMENT A: Approved for public release: distribution unlimited

• A high performing technical organization recognized as a world class innovator for the characterization and analysis of underwater acoustic signatures required for advanced ships and ship systems, and for providing technical solutions that keep our Fleet at sea.

• A learning environment focused on developing the scientists and engineers and accelerating the knowledge transfer required to perpetuate the Navy's underwater acoustic stealth advantage.

• A culture of affordability dedicated to the utilization of common measurement systems and processes to cost effectively provide direct Fleet support.

• Innovative data products support the acquisition and engineering maintenance communities and the operational fleet, serving as an agent of integration between signatures design, implementation, operation and maintenance.

DIVISION 71 VISION STATEMENT

Brief Outline

• Familiarize you with our operations

– Mission

– Sponsor

– Operational Tempo

– Operations

– Challenges

Who Are We??

Chief of Naval Operations Navy Acquisition Executive Commandant, Marine Corps

Naval Ordnance Center

CNR

Naval Research

Laboratory

NAVAIR SPAWAR

Naval Air

Warfare Center

Naval Command, Control & Ocean

Surveillance Center

Crane Division

(Combat & Weapons System

Engr. & Ind.)

Marine Corps Research, Development &

Acquisition Command

(Combat &

Dahlgren Division

Weapons System R&D)

Port Hueneme Division

(Combat & Weapons System

ISE)

Indian Head Division

(Energetic Materials)

Naval Undersea

Warfare Center Naval Surface

Warfare Center

NAVSEA

Carderock Division

(Hull, Mechanical, & Electrical

R&D & ISE)

Who Are We

Signatures Department

Code 70

Acoustics

Code 71

Trial Dir/Facilities

Code 715

D&D

Code 712

Surface Ship

Code 711

Radiated Noise

Code 714

Onboard Meas

Code 713

Elect Mag

Code 75

System Dev

Code 73

Acoustic Mat

Code 72

RCS/IR

Code 74

What We Do

• Test Submarines and Surface Ships for noise

– Quantify the level of noise

– Isolate the source of the noise

– Provide recommendations on reducing the noise

• Sponsored by NAVSEA to Operate Facility and Conduct

Tests

• Unique tests

– NOAA

– National Park Service

– Coast Guard

– Academic and Commercial support

When We Do It

• Test Every Submarine in the Pacific Fleet at the radiated measurement facility

- About every 4 years – Usually after a major refit

- ~ 9-15 Tests per year

- 10 personnel onboard, 19 personnel on shore for each test

- Schedule Flexible

Where We Test

Where we test

SEAFAC

STAFAC

Where We Test

NSWC Carderock Laboratory

Bethesda, MD

STAFAC

Cape Canaveral, FL

South Toto, Bahamas

Puget Sound Detachment

Bremerton, WA

SEAFAC

Ketchikan, AK

Ketchikan

Anchorage

Fairbanks

Seattle

Ketchikan

Southeast Alaska Acoustic Measurement Facility

• $40M Development Cost 1992

• SEAFAC measures the signatures of Pacific Fleet submarines.

– Located in the deep, quiet, and protected waters of the western Behm Canal, a glacial fjord near Ketchikan, AK.

– Initial Operational Capability in 1991.

– Shore complex and two test sites.

• SEAFAC measures submarines under dynamic and static conditions.

• SEAFAC conducts, on average, 12 trials per year.

– Over 200 acoustic trials to date.

– Over 111 static site event to date.

N

Behm Canal

Ketchikan Gravina Island

Static Site

Back Island

Underway Site

Revillagigedo Island

Airport

Technology – How we measure submarine signatures

• Use stand off calibrated sensors

– Take Measurements

• The tools are transformed.

– Spot Beams.

– Multi-processors.

– Graphics programs.

– Omni-directional hydrophones and volumetric arrays.

TRIAL TIMELINES

T-2 Days

Pretrial Preps by

SEAFAC Staff

-1

0 5 4 3

Trial Team

Arrival

ISE/Prep Teams

Arrival

Submarine

Arrival

COMEX

U/W Trial

FINEX

U/W Trail

COMEX

Static Trial

FINEX

Static Trial

Trial Team

Departs

Complete

Post Trial Shutdown

At Sea Phase

Pretrial

Planning

T-100 Days -80 40 20 0 -20 -40 -60 100 80 60

Issue

TEP

Conduct

Brief

Conduct At

Sea Phase

Conduct

Trial

Begin

Trial

Analysis

Phase

Conduct

Conference

Pretrial

Preparations

Issue 15D

Message

Issue Final

Report

Trial Key Events

• Prepare Facility

– Checklist for both shore and static site

• Embark ISE Team

– Small Boat Transfer

• Receive Shore Side Analysts

– Airport Boat Transfer

• Begin Trial

– Small Boat Transfer

• Enter Static Site

– Multiple Boat Operations

• Tying up

• Equipment Installation

• Transfers

• Exit Static Site

– Multiple Boat Operations

High Gain Measurement System

Upper

Rigid Array Frame

Oil-filled

Acoustic Stave

Assemblies

(16 total)

Exoskeleton

“Twisted Bi-Cone” Configuration

Stave

Hydrophones

(640 total)

Lower Rigid

Array Frame

Instrument Pressure

Vessels (4 total)

Umbilical

Connector

Loading and testing the IPV Electronics

HGMS in Static Site and at South TOTO $60M Development Cost

Typical Test

• Underway Testing

• 2 Days

• Quantify propulsion and flow signature

• ~2 runs per hour

• Communications very limited

• Static Testing

• 1 Day

• Quantify and diagnose machinery signature

• ~6 runs per hour

• Open communications

STATIC PREPARATION

TIMELINE (hrs)

Complete hydrophone ranging

T 0 T 8

Complete underway trials

Complete trim dive

Submarine on surface

Start static trials

Complete perstrans & deliver rigging

Complete mooring

Submarine submerged to trial depth

Complete comms rigging

Scheduled timing from completion of underway testing to start of static testing is

7.5 hours

TOPSIDE RIGGING (FWD)

TOPSIDE RIGGING (AFT)

RECEIVING SUSPENSION

WIRES

ATTACHING SUSPENSION

WIRES

SHIP CAPTURED

SUBMERGING

Power

Barge

Suspension

Barge

37 Yd

207 Yd Barge Separation

Ship ballasted 10,000 lb light

SUBMERGING

Power

Barge

Suspension

Barge

37 Yd

400'

120'

195 Yd Barge Separation

Ship ballasted 10,000 lb heavy - 120 ft keel depth

208 Yd Barge Separation

Ship Ballasted 40,000 lb heavy - At depth for testing

Ship Submerged or Surfaced

Holding IX-527 Suspension

Cables at Fixed Scope.

Facility Maintenance/Repair

Secure SEAFAC Compound

• Supports continuous test operations

• Self-sufficient maintenance Pier and

Boat Ramp

Static and Underway Sites

Back Island Facilities

People

Trial Dir/Facilities 3/3 People Code 715

D&D 1/0 People Code 712

Surface Ship

Code 711

Radiated Noise 6/0 People Code 713

Onboard Meas 0/6 People Code 714

System Dev 9/1 People

Code 73

19 People at the Lab

Meals provided for all days

10 People riding the submarine

Meals and berthing provided first night

Conditions on the “Beach”

• Port/Stbd – Minimum of 12 hours on the job – more typically, 14

• Ind Rack – Share the same room as their coworker

• 70°and Fluorescent

Operational Tempo

• Events

– At the Needs of the Navy

– Miss Birthdays, Anniversaries, All Holidays so far Except

Christmas

• Trips Support

– Trial – Submarines and Surface Ships – 9 to 15 per year

• Typically 4 days

• Can last as long as 2 weeks

– System Upgrades – 2 per year

• Typically 5 days

– System Maintenance – 12 per year

• Typically 5 days

Questions???