Exhibit 10.1
Form 8-K
Viking Systems, Inc.
File No. 000-49636

Neither this  Convertible  Promissory  Note nor the shares of common stock which
will be issued if this Note is converted  into shares of common stock,  has been
registered  under the Securities Act of 1933 or applicable state securities laws
and may not be  sold,  transferred,  assigned,  offered,  pledged  or  otherwise
distributed  for value  without  the  express  written  consent of the Maker and
Maker's receipt of an opinion of counsel acceptable to the Maker that such sale,
transfer,  assignment,  offer,  pledge or other distribution for value is exempt
from the registration and prospectus delivery  requirements of such Act and such
laws.

$300,000                                                       February 17, 2005

                           CONVERTIBLE PROMISSORY NOTE

     FOR VALUE RECEIVED,  Viking Systems,  Inc., a Nevada corporation ("Maker"),
hereby promises to pay to the order of Brian Miller ("Payee"), the principal sum
of THREE HUNDRED  THOUSAND  Dollars (U.S.  $300,000.00),  together with interest
thereon  from the date  hereof  accruing  at the rate of ten  percent  (10%) per
annum.  Principal and all accrued interest shall be payable in full on or before
March 31, 2005.

                                  PAYMENT TERMS

     Principal and Interest.  The principal  amount of this Note,  together with
all accrued interest, shall be due and payable on or before March 31, 2005.

     Manner of Payment.  All  payments of  principal  and  interest on this Note
shall be made payable to Payee and mailed to One Market Plaza Spear Tower, Suite
700,  San  Francisco,  CA 94105 or at such other  place in the United  States of
America  as Payee  shall  designate  to  Maker in  writing.  If any  payment  of
principal or interest on this Note is due on a day which is not a Business  Day,
such  payment  shall  be due on the  next  succeeding  Business  Day,  and  such
extension  of time shall be taken  into  account  in  calculating  the amount of
interest  payable  under  this Note.  "Business  Day" means any day other than a
Saturday, Sunday or legal holiday in the State of Nevada.

     Prepayment.  Maker may,  without  premium or penalty,  at any time and from
time to time, prepay all or any portion of the outstanding principal balance due
under this Note,  provided that each such  prepayment is  accompanied by accrued
interest  on the  amount of  principal  prepaid  calculated  to the date of such
prepayment.






                                     DEFAULT

     The  occurrence of any one or more of the following  events with respect to
Maker shall constitute an event of default hereunder ("Event of Default"):

          (a) If Maker  shall fail to pay when due any payment of  principal  or
     interest on this Note and such  failure  continues  for  fifteen  (15) days
     after Payee notifies Maker therein writing;

          (b) The Maker shall default in the  observance or  performance  of any
     other term,  covenant or agreement  contained herein and the same shall not
     be cured within fifteen (15) days of the occurrence thereof;

          (c) If,  pursuant  to or  within  the  meaning  of the  United  States
     Bankruptcy Code or any other federal or state law relating to insolvency or
     relief  of  debtors  (a  "Bankruptcy  Law"),  Maker  shall (i)  commence  a
     voluntary  case or  proceeding;  (ii)  consent to the entry of an order for
     relief against it in an involuntary  case; (iii) consent to the appointment
     of a trustee, receiver, assignee, liquidator or similar official; (iv) make
     an assignment for the benefit of its creditors; or (v) admit in writing its
     inability to pay its debts as they become due.

          (d) If a court of  competent  jurisdiction  enters  an order or decree
     under  any  Bankruptcy  Law  that  (i) is for  relief  against  Maker in an
     involuntary case, (ii) appoints a trustee, receiver,  assignee,  liquidator
     or similar  official for Maker or substantially  all of Maker's assets,  or
     (iii) orders the liquidation of Maker, and in each case the order or decree
     is not dismissed within 120 days.

                                    REMEDIES

     Upon the occurrence of an Event of Default  hereunder (unless all Events of
Default  have been cured or waived by Payee),  Payee may, at its option,  (i) by
written  notice to Maker,  declare the entire unpaid  principal  balance of this
Note,  together with all accrued interest  thereon,  immediately due and payable
regardless  of any prior  forbearance  and (ii)  exercise any and all rights and
remedies available to it under applicable law,  including,  without  limitation,
the right to collect  from Maker all sums due under this Note.  Maker  shall pay
all  reasonable  costs  and  expenses  incurred  by or on  behalf  of  Payee  in
connection with Payee's  exercise of any or all of its rights and remedies under
this Note, including, without limitation, reasonable attorneys' fees.

                    CONVERSION INTO CONVERTIBLE DEBT INSTRUMENT

     The unpaid  principal amount of the Note and accrued interest thereon shall
be converted in full into a subsequent  Convertible Debt Instrument  pursuant to
the Maker's anticipate  convertible debt issuance provided that such convertible
debt issuance is presented to Payee on or before March 1, 2005.

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                                     WAIVER

     The rights and  remedies of Payee under this Note shall be  cumulative  and
not alternative. No waiver by Payee of any right or remedy under this Note shall
be  effective  unless in writing  signed by Payee.  Neither  the failure nor any
delay in exercising any right,  power or privilege  under this Note will operate
as a waiver of such right,  power or privilege and no single or partial exercise
of any such  right,  power or  privilege  by Payee  will  preclude  any other or
further exercise of such right,  power or privilege or the exercise of any other
right,  power or privilege.  To the maximum extent  permitted by applicable law,
(a) no claim or right of Payee  arising  out of this Note can be  discharged  by
Payee,  in whole or in part, by a waiver or  renunciation  of the claim or right
unless in a writing,  signed by Payee;  (b) no waiver that may be given by Payee
will be applicable  except in the specific  instance for which it is given;  and
(c) no  notice  to or  demand  on Maker  will be  deemed  to be a waiver  of any
obligation  of Maker or of the  right of Payee to take  further  action  without
notice or demand as  provided in this Note.  Maker  hereby  waives  presentment,
demand, protest and notice of dishonor and protest.

                                OTHER PROVISIONS

     This Note shall be  construed  according  to, and shall be governed by, the
laws of the State of  California.  The  provisions  of this Note shall be deemed
severable, so that if any provision hereof is declared invalid under the laws of
any state where it is in effect,  or of the United States,  all other provisions
of this Note shall  continue in full force and effect.  This Note may be amended
only by a writing signed on behalf of each party.

     Any suit filed to enforce  this Note or  collect  the money owed  hereunder
shall be filed in any state or federal court having subject matter  jurisdiction
and  located  in San Diego  County,  California.  In any  action  or  proceeding
instituted  with  respect to any such claim,  Maker  irrevocably  submits to the
jurisdiction of such courts.

     This Note shall be binding upon the  successors  and assigns of Maker,  and
shall  inure  to the  benefit  of  and be  enforceable  by the  heirs,  personal
representatives, successors and assigns of Payee or any other holder hereof.

     IN WITNESS WHEREOF, the undersigned has duly executed, sealed and delivered
this Promissory Note the day and year first above written.

                                    VIKING SYSTEMS, INC.,
                                    a Nevada corporation


                                    By:    /s/ Thomas B. Marsh
                                             Thomas B. Marsh, President

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