Coastwise Marine Design Inc. (2024)

16/03/2023

Mardo and Gyrfalcon yesterday in the Port of Port Townsend

15/03/2023

Another example of leveraging laser metrology, here are two images of a recently scanned point cloud (28 different clouds actually) of Raider Boats Coastal 25 that I'll be doing some redesign work on. It is a full scan of the exterior and interior imported into Rhino in E57 format. The file is quite large, 5.14gb and requires lots of computing power. They had difficulty doing the scan because of the reflectivity of aluminum so they buffed on some compound that helped.

15/03/2023

Using laser metrology technology to scan and digitize boats has made my re-design work much easier and far more accurate. I've been hiring metrology companies for about 10 years now. Here are images of a 31' traditionally built 1940 Norwegian double ender I had scanned hanging in the travel lift for about a half hour in Port Townsend in October 2021. Similar to a Stor Tumlaren, but a little bigger. The owner of the boat wanted a lines and deck plan drawn, but has also been looking recently at improving the sailing ability which is mediorce in light air at best. The boat doesn't have it's original lead ballast keel. That was removed during WWII for bullets (so the story goes) and after the war a larger cast iron keel was bolted on. That ballast keel is too large making the boat too heavy for it's sailplan which should also be enlarged. The next step is to design a new keel/ballast arrangement (or calculate how much iron keel to cut off) and add more fore triangle like the Stor Tumlaren's sailplan.

14/03/2023

4 years ago, I designed a stern foil for a Millenium 45 crabber that was squatting a bit and more with pots aboard. The foil was finally built and installed last year in Bellingham, WA. Unfortunately, I don't have before and after videos, but the owner reported recently that he loves the new foil. And that it has dampened rolling and pitching as well. The photos underway from before are from the MM website. The foil has a 54" chord at the skeg, 30" at the tips. The rudder leaves much to be desired. Hopefully, that will get upgraded in the future and the trailing edge of the skeg faired in. The foil weighs about 200 lbs but has about 170 lbs of buoyancy so a net 30 lb weight.

10/03/2023

Recent photos of a new set net skiff design, 23' x 9' nearly flat bottom, 6k lb capacity being built by Crozier Craft now in Joyce, WA.

10/03/2023

From the metal workboat department come two aluminum landing craft designs that sound like (as of yesterday) will move forward. Coincidentally both will be built in Maine (for different clients) for coastal operations there. The first is a 42' x 14' model with a raised aft pilot house and about a 10k lb capacity between deck load and a 52 cf hold. There will also be a 52 cf water ballast tank. Twin 350 outboards and 520 gal. fuel capacity. An F250 is shown on deck. This craft will be used primarily in the Penobscot Bay with service to outlying islands and will satisfy ISO cat B criteria.

The second craft is a 30' x 11' and has a mid pilot house arrangement and room to carry an ATV forward. A single Suzuki 300 hp outboard and 150 gal. of fuel. It will be built for and operated by the City of Portland, ME for utility operations in Casco Bay. It'll be nice to see some CMD workboat designs on the Maine Coast!

10/03/2023

Renderings and photos of a 24' x 8.5' sport boat design. The boat is currently being built on Pennock Island across the channel from Ketchikan, AK. It will have a single 250 outboard and 100 gal. of fuel, a full width cabin and bow well. There are two 7 cubic ft. fish boxes under the cockpit deck.

10/03/2023

Here are images of the latest version of the 26' G&B electric launch. I narrowed the stern 6", deepened the keel at the fore fooot, raked the stem and pilot house front further. A Torqueedo system is being considered which includes a 25KW motor and two 360v 38KW batteries. The batteries are big, 67L" x 39"W x 7"H and weigh 625 lbs each. I ended up with the motor forward because of the weight of the batteries wanting be closer to the LCB. I'm looking into smaller battery options. Float planes light and with 14 people.

09/03/2023

Quick concept for hull and keel cradles to drop a fin keel for new keel bolts for a Gib'Sea 402 in Bonaire (Netherlands Antilles), a 40' French production sailboat built in 1990. Cradle is designed to not need a travel lift, only aboat a 10 ton hydraulic jack and can be built with materials from the local lumber yard. The mast would be removed before dropping the fin keel.

08/03/2023

I've had the pleasure of recently providing design support to two non-profits that are doing good things. I worked up a couple of drawings for the Whidbey Island Maritime Heritage Foundation for schooner Suva's planking expansion for USCG submittal. And a hull model for displacement and trim calcs for the 172' retired tanker Mary Whalen of PortSide NY. The hull model represents about 7 hours of work yesterday. Floated to the light displacement line noted on the lines is 376.8 long tons.

02/03/2023

I was going through some old folders recently and came across this lines plan for the 101' LOD Crowninshield designed schooner Adventuress. The schooner is based out of Port Townsend, WA and operated by Sound Experience. The drawing appears to be original but the lines were traced by Bob Perry in '93.

18/02/2023

From the department of simple living is a proposal for a 33' x 13.5' house boat. Essentially a tiny home on foam filled poly floats for a client who is interested in simplifying her life. She would moor it at a dock in Poulsbo, WA. For occasional trips around Liberty Bay in only the finest summer weather, there is a 25 kw Pure Watercraft electric outboard. Pontoon cross structure is aluminum tubing bolted together. Everything else can be found at your local lumber yard.

17/02/2023

Recently, I've been entertaining the idea of more efficient power hull forms in the context of an all season coastal cruiser. Here's a preliminary design for a 34' x 10.5' 12 kt motor boat in a traditional style, but epoxy plywood/fiberglass composite construction. The hull is developable aside from the tunnel. Propulsion is a 120 hp Yanmar diesel with a conventional driveline (with Aquadrive) and 180 gal of fuel. Range at 12 kts would be about 500 nm.

This is the first stab at the arrangement which I'm considering revising with seating aft of the helm and the pilot house further forward.

12/02/2023

The 82' steel Bristol Bay tender that I designed rudders for last year was moved about 5.5 miles to the Port of Port Townsend last night by Oxbo Mega Transport. Now the aluminum pilot house can be installed and systems finalized. One step closer to launch and service in the Bay this summer.

Coincidentally, one of the principals at OMT is Tullio Celano who I used to sub-contract for (2013-15) when he was Crescere Marine Engineering.

19/11/2022

Images of a concept for a new 26' harbor launch in a lobster boat style for Gannon and Benjamin Marine Railway in Vineyard Haven, MA. Traditional wood construction with light scantlings. I may narrow the transom a bit along with other changes. G&B is considering electric or hybrid electric propulsion, but they would like to maintain a similar aesthetic to their existing launch. There is not enough roof area for only solar charging nor enough sunshine so a large bank of batteries and dock charging are being explored. Also included is an image of their current launch.

10/11/2022

Preliminary images of a 26' x 15' steel tug design for a client in Bellingham, WA. Twin John Deere 6068AFM 300 hp diesels coupled with ZF305 gears. 500 gal fuel capacity. For general utility work around Bellingham and Lummi Island.

28/05/2022

Do you currently own a power vessel with a flat plate rudder/s and would like better helm response especially for low speed maneuvering? I'd be happy to design and provide NC cutting files for an improved rudder for your boat like a Maclear Thistle fishtail style or an articulating type with a tab. Here are examples of each: a set of thistle rudders for an 80' x 24' Ray Wadsworth design salmon tender for Bristol Bay AK. And an articulating rudder for a 66' Bill Garden power yacht Miriam for the Port Townsend Shipwrights Coop in 2017.

26/05/2022

Recently, I've been providing the Port Townsend Shipwrights Coop design support for their repower/full refit of a 1969 42' Chris Craft Commander power yacht. NW Metrology's laser scan of the hull was the basis for a 3D computer model that was used for a powering/resistance analysis using Orca3D. The Coop will be replacing the Marine Power 385 hp diesels with new Volvo Penta D6 440's. and also adding about 4k lbs in weight including a Seakeeper 5 gyro stabilizer that will be installed at the forward end of the lazarette.

10/03/2022

Construction is underway of a traditional 20’ sailing snekke of my design at the Northwest School of Wooden Boatbuilding in Port Hadlock, WA. It is a version of the wooden lapstrake double enders (power and sail) that are common on the coast of Norway. At the school, the students learn various traditional and modern wooden boatbuilding methods. They also learn traditional hand lofting, but in this project they are learning the benefit of digital lofting. I provided full size templates for the CL timbers, molds, ballast keel, and rudder. I will be giving a presentation soon at the school about the design process and specifically how I used Rhino, Autocad, Orca3D and Excel to move from a concept to 3D to 2D drawings and lofting.

This project was inspired by two other smaller sailing snekke. One built recently at the school and another, the HAV HESTON, a 19’er owned by the folks at NW Sails located at the school. The lead instructor of this boat will also own it for cruising Puget Sound and beyond.

Construction is larch planking on locust frames with a purple heart and locust CL. Copper and bronze fastenings. Decks will be teak over ply. 206 square feet of sail, just over 2000 lbs lightship with 840 lbs of external lead ballast.

21/02/2022

Under construction now at ACI Boats for a 4 boat contract is my design of a 38' x 14' aluminum semi-displacement cat for the fisheries in American Samoa. Intended as a stable platform for longlining that is economical to operate. 7k lb fish hold capacity (spray brine) in two 75 c.f. fish holds. Twin inboard diesel Yanmar 160 hp engines with conventional drivelines/props housed in tunnels with 300 gallon diesel capacity. 10-12 kt cruise speed and accomodation for 4.

17/02/2022

I was describing this project the other day to someone. TBT to 2014 when CMD was sub-contracting for Crescere Marine Engineering (Tullio Celano) on the construction of an aquaculture installation in Lake Cushman, WA. Crescere had been hired by Dix Corporation (the builder) to develop launch, mooring, ballasting plans and more for an enormous fish funnel (Net Transition Structure) and pump barge/fish counter/collector (Floating Surface Collector). Crescere advised Dix that it would be easier, cheaper and safer assembling the NTS upside down (flat side down) then rolling it over in the lake after launch. We developed a rollover plan that detailed piping/flooding/shoring procedures to roll it over without sinking it or crushing the pontoons from hydrostatic pressure. Tullio simulated the rollover using GHS.
The NTS weighed 204k lbs, and the FSC, 871k lbs.

CMD provided all the plans (and weight estimates) for the work mentioned above and then led the rollover for Dix Corp. That's me in the video on the corner of the work barge at about 2:17. I suggest turning off the sound unless you want to get pumped up. 😂 The NTS and FSC were then towed to the south end of the lake and attached to the dam.

https://www.youtube.com/watch?v=BxeR094h3qU

17/02/2022

A photo from the sea trial of the 30' x 10' crabber

14/02/2022

Here is a current project, a design for a 26' x 8.5' aluminum motor boat for a client who wants to be able to run between Anacortes and his home on Lopez Island, WA with occasional trips up to Saltspring Island in BC. The boat needs to be easily trailered and within the capacity of the monorail hoist at Skyline Marina in Anacortes. The original intent of the design brief was to submit a design that would be a mashup of a New England lobster/picnic boat with PNW chine hull planing work boat. I offered two different windshield options. The client has opted for the forward raked windshield so I suppose that feature coupled with the chine hull puts the design firmly in the PNW camp. Client also wanted room for a 4' wide garden style teak bench against the splashwell.

Propulsion is a single 150 hp Honda outboard with a 10 hp trolling motor. 100 gal fuel capacity. 4500 lbs ready for sea.

12/02/2022

Continuing with the tale of two crabbers (from September 2020), here is a design for a 30’ x 10’ crabber recently completed at ACI Boats in Port Townsend, WA. Similar in form as the larger version, this design is intended for clients looking for a similar stable work horse, but easier to trailer and less cost to build and operate. This boat was specifically configured for a Volvo Penta diesel I-O D6-380 DPI engine and drive. 150 gal fuel capacity, about 9600 lbs weight ready to fish, and a 57 cubic foot below deck fish hold.

08/02/2022

Last year CMD contracted with ACI Boats in Port Townsend to develop a line of asymmetrical cat aluminum landing craft. I put together preliminary designs for 22', 26', 38' and 40' versions and the complete design of a 30' x 11' version. Here is that version and a video clip from the sea trial last November with a 2018 Subaru Crosstrek plus 2500 lbs of water barrels aboard. Part of the design process involved running a CFD analysis with Orca 3D's module that allowed me the ability run simulations at different speed and loading combinations and make improvements to the hull in the design stage.

02/02/2022

Here's a design from last fall for a Naknek client for a 32' x 18' through pick drift gillnetter. Propulsion will be twin 8.3 liter 600 hp Cummins diesels driving Hill Innovations Hi 401 water jets. 300 gal fuel capacity, 25k lb. fish hold capacity in 12 holds. Accomodation for 5 total; 1 in the pilot house, 4 in the foc'sle.

24/03/2021

In 2018, I designed the shipping cradle and interior shoring plan for this 82' 1952 Feadship, Anahita V, to be shipped from San Diego to Glasgow, Scotland. After arriving in Glasgow, the boat sat for almost two years and then changed ownership. I was recently contacted by the new owner who will begin the rebuild soon in Glasgow as part of a program to teach marine trades. I look forward to following the rebuild along. Stay tuned for updates.

When the boat was hauled out in 2017 in San Diego, the forefoot collapsed about 8" buckling the hull and internal framing, hence the need for the cradle and shoring. The cradle and shoring design were based on laser scans done of the interior and exterior by Blue Dot Group of Tigard OR. The boat is one of the first Feadships, designed by M Rosenblatt and Son. It is composite construction, double planked teak over longitudinal stringers over transverse steel framing and when the boat languished became an electrolytic nightmare. The last two photos show how it’s been sitting in warehouse in Glasgow for the last couple of years.

24/03/2021

A little more than a year ago, an interesting project came across my desk. I was contacted by representatives from the organization Forterra, who, in collaboration with the Quinault Indian Nation of Washington State, were interested in having me design a 90' ceremonial war canoe that would be built from red cedar using mass timber (glulam) technology. Their hope was to harvest the wood from the Quinault reservation, build the canoe and ship it east to Washington DC to have it paddled up the Potomac as part of the presidential inauguration this past January.

Here are images of the design and method that I proposed. The canoe is 90' x 6' and would weigh about 7.5k lbs light and 17k lbs loaded. The canoe would be built from 9" thick glulam layers similar to lifts in a traditional wood half model. The layers would be stacked vertically to form the rough shape of the canoe then traditional methods would be used to shape and finish it. There would be thwarts that would accommodate 50 paddlers and partial bulkheads under every other thwart. A midships joint would have been designed to break the canoe into two 45' lengths to facilitate shipping.

Unfortunately, the pandemic hit and the project dried up, but hopefully could be resurrected in the future possibly in a smaller form to participate in the Tribal Canoe Journey.

01/03/2021

Ever wonder how the Vikings steered their long boats?

25/02/2021

From the not too distant archives of the traditional department, is a design for a 50' traditionally built gaff cutter modeled after Ashley Butler's Mayflower 50 design. In 2018, a recent graduate of the Northwest School of Wooden Boatbuilding in Port Hadlock WA hired me to redesign the Mayflower for external ballast among other changes. By the time I was done, the hull had morphed into something a bit different; a foot beamier and different sections. The interior arrangement and deck structures changed allowing more headroom down below and an inside helm station for PNW cruising.

The owner is building the boat by himself in North Bend, WA. The effort is like the Everest summiting of amatuer boatbuilding. Part of the process has involved building the shop first which he completed last year. To facilitate the construction process, a nod towards modern methods, all the CL structure and framing was digitally lofted. I provided full size mylar templates for the entire CL structure including the floor timbers and an NC cutfile for plywood templates for the double sawn framing. I've included a few photos from last year, but don't have any recent ones yet.

Coastwise Marine Design Inc.

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