AMENDMENT No. 1 made as of this 1st day of August, 1997 (this
"AMENDMENT") to the AMENDED AND RESTATED SHIPBUILDING CONTRACT (the
"SHIPBUILDING CONTRACT") dated as of June 26, 1997 among Navigator Gas (IOM I-E)
Limited as assignee of Navigator Holdings PLC's rights, title and interest (the
"BUYER") and China Shipbuilding Trading Company, Limited and Jiangnan Shipyard
(collectively, as "SELLER") for construction of one (1) 22,000 Cubic Meters
Liquified Ethylene Gas Carrier (Hull No. 2249). Capitalized terms used and not
otherwise defined herein shall have the respective meanings set forth in the
SHIPBUILDING CONTRACT.

               WHEREAS, the BUYER and SELLER desire to amend certain terms and
schedules of the SHIPBUILDING CONTRACT to and in accordance with Section 7 of
Article XXI of the SHIPBUILDING CONTRACT for the purpose of correcting
provisions therein which have resulted from the increased cost of borrowing
incurred by the BUYER to finance the acquisition of the Vessel;

                           NOW, THEREFORE, in consideration of the foregoing,
BUYER and SELLER agree as follows:


               1. Section 7(a) of Article II of the SHIPBUILDING CONTRACT is
hereby deleted in its entirety and is hereby amended to read as follows:

               "(a) All payments made by the BUYER hereunder in United States
Dollars and prior to Delivery and BUYER's acceptance of the VESSEL shall be in
the nature of installments to the SELLER. In the event that, the VESSEL is
rejected by the BUYER, or this Contract is canceled or terminated by the BUYER,
all in accordance with the terms of this Contract, or if the SELLER should
default in Delivery of the VESSEL or is guilty of breach of this Contract
justifying a rescission thereof by the BUYER then, and in any such event, the
SELLER shall refund to the BUYER an amount equal to the sum of the following:

                                    (i) the amounts set forth in Schedule 2
                           hereto calculated as of the first day of the calendar
                           month in which the Date of Rejection occurs,

                                    (ii) an amount equal to the product of (x)
                           the difference between (1) the amount set forth on
                           Schedule 2 hereto calculated as of the first day of
                           the calendar month immediately succeeding the month
                           in which the Date of Rejection occurs and (2) the
                           amount set forth on Schedule 2 hereto as of the first
                           day of the month in which the Date of Rejection
                           occurs and (y) a fraction the numerator of which is
                           the numeric day of the month of the Date of Rejection
                           and the denominator of which is 30, and

                                    (iii) the amount set forth on Schedule 3
                           hereto calculated as of the calendar month in which
                           the Date of Rejection occurs.




If the amount as calculated above is not paid on the Date of Rejection there
shall be added to such amount interest at the rate of eleven percent (11.0%) per
annum from and including the Date of Rejection to but not including the date
such amount is paid. Such refunds by the SELLER to the BUYER shall forthwith
discharge all obligations, duties, and liabilities of each of the parties hereto
to the other under this Contract. Any and all refunds made to the BUYER under
this Article II, Section 7 shall be made in United States Dollars. Throughout
this Contract, whenever interest is due on any amounts to be paid or refunded by
either party, said interest shall be calculated as simple interest, based on the
actual number of days divided by 360.

               For purposes of this Section 7(a) Date of Rejection means the
date on which written notice of rejection, cancellation or rescission is
delivered by BUYER to SELLER.

               All refunds made by the SELLER to the BUYER under this contract
shall be paid in United States Dollars by telegraphic transfer to the BUYER's
account or its assignee's account as set forth in a written notice to the SELLER
from such party."

               2. Section 1(a)(ii) of Article III of the SHIPBUILDING CONTRACT
is hereby deleted in its entirety and is hereby amended to read as follows:

                           "(ii) If the Delivery is not made on the Original
               Delivery Date (subject to a Permissible Delay as defined below),
               the SELLER shall pay the BUYER, as liquidated damages (not as
               penalty), the amount of $11,000 for each calendar day for the
               first ninety (90) calendar days of delay beyond the Extended
               Delivery Date (as hereinafter defined) and the amount of $14,500
               for each calendar day of delay thereafter up to and including the
               210th day from the Original Delivery Date ("Original Delay
               Period"). Liquidated damages calculated with respect to the
               Original Delay Period shall be recovered by the BUYER through a
               reduction in the Fifth Installment payable by the BUYER to the
               SELLER in an amount equal to such Liquidated Damages."

               3. Section 3(a) of Article XI of the SHIPBUILDING CONTRACT is
hereby deleted in its entirety and is hereby amended to read as follows:

               "(a) If the BUYER is in default of payment as to any installment
as provided in Paragraph 1 (a) and/or 1 (b) of this Article, the BUYER shall pay
interest on such installment at the rate of eleven percent (11.0%) per annum
until the date of the payment of the full amount, including all aforesaid
interest. In case the BUYER shall fail to take delivery of the VESSEL when
required to as provided in Section 1 (c) of this Article, the BUYER shall be
deemed in default of payment of the fifth installment and shall pay interest
thereon at the same rate as aforesaid from and including the day on which the
VESSEL is tendered for delivery by the SELLER, as provided in Article VII
Section 6 hereof."

               4. Schedule 2 of the SHIPBUILDING CONTRACT is hereby deleted in
its entirety and Schedule 2 attached hereto shall be attached as Schedule 2 to
the SHIPBUILDING CONTRACT.


                                        2


               5. Schedule 3 of the SHIPBUILDING CONTRACT is hereby deleted in
its entirety and Schedule 3 attached hereto shall be attached as Schedule 3 to
the SHIPBUILDING CONTRACT.


               6. Schedule 1 to Exhibit A of the SHIPBUILDING CONTRACT is hereby
deleted in its entirety and Schedule 1 to Exhibit A attached hereto shall be
attached as Schedule 1 to Exhibit A to the SHIPBUILDING CONTRACT.

               7. The parties hereto agree that the validity, enforcement and
interpretation of this AMENDMENT and of each Article and part hereof be governed
by and interpreted in accordance with the Laws of England.

               8. This AMENDMENT has been prepared in the English language,
which shall control. This AMENDMENT has been signed in triplicate, one
counterpart being retained by the BUILDER, one by CSTC and one by the BUYER.

               9. This AMENDMENT may be executed in any number of counterparts,
each of which counterparts shall be deemed to be an original, and such
counterparts shall constitute but one and the same instrument.


                                        3


               IN WITNESS WHEREOF, the parties hereto have caused this AMENDMENT
to be duly executed on the day and year first above written.

                                   NAVIGATOR GAS (IOM I-E) LIMITED


                                   By: /s/ Richard Klapow
                                     ----------------------------
                                   Name: Richard Klapow
                                        -------------------------
                                   Title: Director
                                         ------------------------


                                   CHINA SHIPBUILDING TRADING
                                   COMPANY, LIMITED


                                   By:  /s/ Shen Yiping
                                      ---------------------------
                                   Name: Shen Yiping
                                        -------------------------
                                   Title: Vice President
                                         ------------------------


                                   JIANGNAN SHIPYARD


                                   By:  /s/ Gong Jingen
                                      ---------------------------
                                   Name: Gong Jingen
                                        -------------------------
                                   Title: Vice President
                                         ------------------------


                                        4


Navigator Gas Transport PLC                                        July 31, 1997

                SCHEDULE 1 - REFUNDMENT GUARANTEE - HULL NO. 2249


                 MONTH                     DATE                          AMOUNT
                 0.0                     07-Aug-97                     4,572,200
                 0.8                     01-Sep-97                     4,602,681
                 1.8                     01-Oct-97                     4,640,783
                 2.8                     01-Nov-97                     4,678,885
                 3.8                     01-Dec-97                     4,716,986
                 4.8                     01-Jan-98                     4,755,088
                 5.8                     01-Feb-98                     4,793,190
                 6.8                     01-Mar-98                     4,831,291
                 7.8                     01-Apr-98                     4,869,393
                 8.8                     01-May-98                     4,907,495
                 9.8                     01-Jun-98                     4,945,596
                10.8                     01-Jul-98                     4,983,698
                11.8                     01-Aug-98                     5,021,800
                12.8                     01-Sep-98                     5,059,901
                13.8                     01-Oct-98                     5,098,003
                14.8                     01-Nov-98                     5,136,105
                15.8                     01-Dec-98                     5,174,206
                16.8                     01-Jan-99                     5,212,308
                17.8                     01-Feb-99                     5,250,410
                18.8                     01-Mar-99                     5,288,511
                19.8                     01-Apr-99                     5,326,613
                20.8                     01-May-99                     5,364,715
                21.8                     01-Jun-99                    12,261,116
                22.8                     01-Jul-99                    12,356,371
                23.8                     01-Aug-99                    12,451,625
                24.8                     01-Sep-99                    12,546,879
                25.8                     01-Oct-99                    12,642,133
                26.8                     01-Nov-99                    12,737,387
                27.8                     01-Dec-99                    12,832,641
                28.8                   01-Jan-2000                    12,927,896
                29.8                   01-Feb-2000                    19,881,450
                30.8                   01-Mar-2000                    20,033,856
                31.8                   01-Apr-2000                    20,186,263
                32.8                   01-May-2000                    20,338,670
                33.8                   01-Jun-2000                    25,063,276
                34.8                   01-Jul-2000                    25,253,785
                35.8                   01-Aug-2000                    25,444,293
                36.8                   01-Sep-2000                    25,634,801
                37.8                   01-Oct-2000                    25,825,310
                38.8                   01-Nov-2000                    26,015,818
                39.8                   01-Dec-2000                    26,206,326
                40.8                   01-Jan-2001                    26,396,835
                41.8                   01-Feb-2001                    26,587,343
                42.8                   01-Mar-2001                    26,777,851
                43.8                   01-Apr-2001                    26,968,360


Cambridge Partners, L.L.C.                                                 FINAL




Navigator Gas Transport PLC                                        July 31, 1997

                SCHEDULE 2 - REFUNDMENT GUARANTEE - HULL NO. 2249


                 MONTH                     DATE                          AMOUNT
                 0.0                     07-Aug-97                     4,572,200
                 0.8                     01-Sep-97                     4,602,681
                 1.8                     01-Oct-97                     4,640,783
                 2.8                     01-Nov-97                     4,678,885
                 3.8                     01-Dec-97                     4,716,986
                 4.8                     01-Jan-98                     4,755,088
                 5.8                     01-Feb-98                     4,793,190
                 6.8                     01-Mar-98                     4,831,291
                 7.8                     01-Apr-98                     4,869,393
                 8.8                     01-May-98                     4,907,495
                 9.8                     01-Jun-98                     4,945,596
                10.8                     01-Jul-98                     4,983,698
                11.8                     01-Aug-98                     5,021,800
                12.8                     01-Sep-98                     5,059,901
                13.8                     01-Oct-98                     5,098,003
                14.8                     01-Nov-98                     5,136,105
                15.8                     01-Dec-98                     5,174,206
                16.8                     01-Jan-99                     5,212,308
                17.8                     01-Feb-99                     5,250,410
                18.8                     01-Mar-99                     5,288,511
                19.8                     01-Apr-99                     5,326,613
                20.8                     01-May-99                     5,364,715
                21.8                     01-Jun-99                    12,261,116
                22.8                     01-Jul-99                    12,356,371
                23.8                     01-Aug-99                    12,451,625
                24.8                     01-Sep-99                    12,546,879
                25.8                     01-Oct-99                    12,642,133
                26.8                     01-Nov-99                    12,737,387
                27.8                     01-Dec-99                    12,832,641
                28.8                   01-Jan-2000                    12,927,896
                29.8                   01-Feb-2000                    19,881,450
                30.8                   01-Mar-2000                    20,033,856
                31.8                   01-Apr-2000                    20,186,263
                32.8                   01-May-2000                    20,338,670
                33.8                   01-Jun-2000                    25,063,276
                34.8                   01-Jul-2000                    25,253,785
                35.8                   01-Aug-2000                    25,444,293
                36.8                  01-Sep-2000|                    25,634,801
                37.8                   01-Oct-2000                    25,825,310
                38.8                   01-Nov-2000                    26,015,818
                39.8                   01-Dec-2000                    26,206,326
                40.8                   01-Jan-2001                    26,396,835
                41.8                   01-Feb-2001                    26,587,343
                42.8                   01-Mar-2001                    26,777,851
                43.8                   01-Apr-2001                    26,968,360


Cambridge Partners, L.L.C.                                                 FINAL




Navigator Gas Transport PLC                                        July 31, 1997

                  SCHEDULE 3 - PERFORMANCE BOND - HULL NO. 2249


                 MONTH                     DATE                        AMOUNT
                 0.0                        Aug-97                     1,944,896
                 0.8                        Sep-97                     4,640,114
                 1.8                        Oct-97                     4,867,180
                 2.8                        Nov-97                     5,113,041
                 3.8                        Dec-97                     5,335,997
                 4.8                        Jan-98                     5,586,870
                 5.8                        Feb-98                     5,862,973
                 6.8                        Mar-98                     6,077,560
                 7.8                        Apr-98                     6,330,442
                 8.8                        May-98                     6,561,446
                 9.8                        Jun-98                     6,811,012
                10.8                        Jul-98                     7,058,244
                11.8                        Aug-98                     7,314,047
                12.8                        Sep-98                     7,577,918
                13.8                        Oct-98                     7,820,732
                14.8                        Nov-98                     8,081,411
                15.8                        Dec-98                     8,320,795
                16.8                        Jan-99                     8,588,112
                17.8                        Feb-99                     8,881,814
                18.8                        Mar-99                     9,118,022
                19.8                        Apr-99                     9,390,022
                20.8                        May-99                     9,641,573
                21.8                        Jun-99                     9,860,039
                22.8                        Jul-99                    10,111,009
                23.8                        Aug-99                    10,368,930
                24.8                        Sep-99                    10,633,266
                25.8                        Oct-99                    10,880,858
                26.8                        Nov-99                    11,142,656
                27.8                        Dec-99                    11,387,519
                28.8                      Jan-2000                    11,658,649
                29.8                      Feb-2000                    11,891,381
                30.8                      Mar-2000                    12,129,743
                31.8                      Apr-2000                    12,385,117
                32.8                      May-2000                    12,627,351
                33.8                      Jun-2000                    12,847,110
                34.8                      Jul-2000                    13,253,536
                35.8                      Aug-2000                    13,686,971
                36.8                      Sep-2000                    13,943,251
                37.8                      Oct-2000                    14,189,496
                38.8                      Nov-2000                    14,444,255
                39.8                      Dec-2000                    14,688,865
                40.8                      Jan-2001                    14,957,062
                41.8                      Feb-2001                    15,236,859
                42.8                      Mar-2001                    15,491,380
                43.8                      Apr-2001                    15,491,380


Cambridge Partners, L.L.C.                                                 FINAL