terminal compatibility study

M/V HIYU USCG 508159 IMO 8645301

Terminal Compatibility Study

Prepared for: Whatcom County Dept. of Public Works Bellingham, WA

Ref: 15015-001-070-0 Rev. - April 6, 2015

Whatcom County Dept. of Public Works M/V HIYU 4/6/15

ELLIOTT BAY DESIGN GROUP Job: 15015 By: JEJ 15015-001-070-0-.docx Rev. - Page: i

PREPARED BY

Elliott Bay Design Group 5305 Shilshole Ave. NW, Ste. 100

Seattle, WA 98107

GENERAL NOTES 1. This document is for information and planning purposes and not intended for regulatory

review.

REVISIONS REV DESCRIPTION DATE APPROVED

- Initial Issue 4/6/15 JEJ 48949

CONFIDENTIAL AND PROPRIETARY PROPERTY OF ELLIOTT BAY DESIGN GROUP LLC

MAY NOT BE USED FOR CONSTRUCTION OR PROVIDED TO ANY THIRD PARTIES WITHOUT PRIOR WRITTEN CONSENT.

© 2015 ELLIOTT BAY DESIGN GROUP.


ELLIOTT BAY DESIGN GROUP Job: 15015 By: JEJ 15015-001-070-0-.docx Rev. - Page: ii

TABLE OF CONTENTS

PAGE

1 Purpose 1

2 Procedure 1 2.1 Terminal Analysis 1 2.2 Water Depth 1

3 Conclusions 2

4 References 2

Appendix A 3

Appendix B 6

Appendix C 8

Appendix D 10

Appendix E 12


ELLIOTT BAY DESIGN GROUP Job: 15015 By: JEJ 15015-001-070-0-.docx Rev. - Page: 1

1 PURPOSE The M/V HIYU is a Roll On - Roll Off (Ro-Ro) vehicle ferry which is 162' in length, 63.1' in breadth, and 15.5' in total hull depth. Whatcom County Department of Public Works is interested in utilizing the M/V HIYU for use in the Whatcom County ferry system which serves terminals at Gooseberry Point and Lummi Island in Washington State, and possibly the Alaska Marine Highways System (AMHS) terminal in Bellingham, WA. To accommodate M/V HIYU the terminals will require modifications in order to safely interface with the vessel at Gooseberry Point and Lummi Island. This report illustrates the extent of the terminal modifications required to accommodate the M/V HIYU.

2 PROCEDURE This analysis is similar to what was previously done for the M/V TREK [1]. However, unlike the M/V TREK study this study focuses on modifications needed to the terminals to accommodate the M/V HIYU.

2.1 Terminal Analysis The terminal layouts were taken from Reference [2]. The M/V WHATCOM CHIEF was drawn in the terminals to determine the existing overlap between the deck and apron. All efforts were made to meet the same amount of apron overlap that currently exists with the M/V WHATCOM CHIEF. The M/V WHATCOM CHIEF deck plan was taken from Reference [3].

The deck plan of the M/V HIYU was taken from Reference [4]. Various modifications to the deck plan were examined at both terminals and in three orientations. The apron overlap was checked with:

• the vessel against the wingwalls and square to the apron • the vessel against the wingwalls and rotated against a port dolphin • the vessel against the wingwalls and rotated against a starboard dolphin

The deck edge of the M/V WHATCOM CHIEF, M/V TREK and the modified M/V HIYU are shown together for comparison in Appendix A.

2.2 Water Depth The M/V HIYU has a considerably deeper draft than the M/V WHATCOM CHIEF. The confined entry to the Lummi Island terminal may pose some operational issues during periods of extreme low tides [5]. There is no industry standard for operating a passenger vessel in any given water depth. Generally speaking it is common practice to keep at least 1' to 2' of water beneath the keel to prevent accidental groundings.

Consideration should be given to the type of bottom, exposure to wind and waves, and any additional hazards. In this case the bottom is sandy which reduces the risk of damage in the case of accidental grounding. The location is well sheltered from the long swells of the Salish Sea which would cause the vessel to ground due to waves.

Referencing the National Oceanographic and Atmospheric Administration (NOAA) tidal predictions for Bellingham Bay in 2015, there are 8 instances of a -2.0' tide or lower which



would leave only 1' or less of water beneath the keel [6]. There are 60 instances of a -1.0' tide or lower which leaves 2.0' or less of water beneath the keel. Given these factors the draft of the M/V HIYU is a concern and will limit the operations of the vessel in the Whatcom County Ferry System. The severity of the limitations will be dependent upon the conditions at the time of sailing.

3 CONCLUSIONS The suggested modifications to the Whatcom County ferry terminals are shown in Appendix C. The terminal dolphins and pilings must be widened to accommodate the larger vessel approach.

4 REFERENCES

[1] Elliott Bay Design Group, "M/V TREK: Terminal Compatibility Study," 14040-001-070-0 Rev -, Seattle, WA, 1/27/15.

[2] PND Engineers, "914004," Gooseberry Point Terminal Dolphin Replacement, 2014.

[3] Elliott Bay Design Group, "05017-1-1042EX," Whatcom Chief Main Deck Arrangement, 2005.

[4] Blount Marine Corporation, "A-293-1-B," General Arr'gt & Profile, 100' Auto-Ferry, 1968.

[5] PND Engineers, Inc., "Gooseberry Point Terminal Dolphin Replacement," CRP # 914004, Seattle, WA, 3/2014.

[6] National Oceanographic and Atmospheric Administration, "Tide Predictions - Bellingham 9449211 Tidal Data Daily View - NOAA Tides & Currents," Center for Operational Oceanographic Products and Services, 15 10 2013. [Online]. Available: http://tidesandcurrents.noaa.gov/noaatidepredictions/NOAATidesFacade.jsp?Stationid=9449211. [Accessed 30 3 2015].



Appendix A Vessel Comparison



Appendix B M/V HIYU at Existing Terminals



Figure 1 - M/V HIYU at the Gooseberry Point Ferry Terminal

Figure 2 - M/V HIYU at the Lummi Island Ferry Terminal



Appendix C M/V HIYU at Modified Terminals



Figure 3 - M/V HIYU at modified Gooseberry Point Ferry Terminal

Figure 4 - M/V HIYU at modified Lummi Island Ferry Terminal



Appendix D M/V WHATCOM CHIEF

at Modified Terminals



Figure 5 – M/V HIYU rotated at new Gooseberry Point Ferry Terminal. Existing vessel rotation is dashed for reference.

Figure 6 M/V HIYU rotated at new Lummi Island Ferry Terminal. Existing vessel rotation is dashed for reference.



Appendix E Vessel Drafts at Whatcom County

Ferry Terminals



Figure 7 - Considered vessel drafts at the Gooseberry Point Ferry Terminal. Waterdepths shown are Mean Low, Low (MLL) tide. The M/V HIYU draws approximately 11'-3" [5].

Figure 8 - Considered vessel drafts at the Lummi Island Ferry Terminal [5].

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