Passage Maker - - Contents - By Brian K. Lind

Rarely do you see green trawler de­signs that meet the stan­dards of a pas­sage mak­ing ves­sel, as well as keep­ing a rigid fo­cus on green en­ergy con­ser­va­tion. That, how­ever, is not true about the new, space-age Trond­heim 40 electric trawler con­cept de­signed by Max Zhivov. Zhivov is known for de­sign­ing green and hy­brid-boat sys­tems that push the bound­aries of clas­sic yacht­ing and fo­cus at­ten­tion on be­ing as green as pos­si­ble. His Trond­heim 40 con­cept is a pur­pose-built pas­sage mak­ing/ ex­pe­di­tion yacht that uti­lizes all-electric propul­sion.

The Trond­heim 40 is de­signed as much to han­dle ill­tem­pered weather as it is for longer pas­sages. With two state­rooms, a com­fort­able saloon, and roomy pilothouse, this boat looks to be at home on trips from the Great Loop or the In­side Pas­sage. Her smaller electric mo­tors and the builder’s abil­ity to spread out the lo­ca­tion of bat­ter­ies and gen­er­a­tors should make for plenty of us­able space on board.

For propul­sion, the 40 makes use of Torqeedo’s newly de­vel­oped Deep Blue electric-hy­brid sys­tem. Deep Blue is a turn-key propul­sion sys­tem from power gen­er­a­tion to stor­age and electric propul­sion that can be eas­ily ap­plied to a trawler re-power or new build. On the Trond­heim, the Deep Blue pack­age in­cludes a 1,400 rpm electric mo­tor de­signed specif­i­cally to push dis­place­ment ves­sels. Trond­heim ad­ver­tises that the Torqeedo sys­tem will pro­vide six hours of con­tin­u­ous op­er­a­tion from stored bat­tery power pro­vided by two Deep Blue bat­ter­ies (rated @ 64 kWh apiece). The abil­ity to cruise silently on a trawler will surely ap­peal to re­tired sailors who miss qui­etly glid­ing through the wa­ter. With the ad­di­tion of diesel gen­er­a­tors, the Trond­heim 40 should be able to travel sub­stan­tial dis­tances while op­er­at­ing 30-per­cent more ef­fi­ciently than com­pa­ra­ble 40-foot­ers.

If built close to the de­sired spec, Trond­heim will of­fer own­ers a real op­por­tu­nity to cruise a green electric-hy­brid trawler.

More at: www.trond­heim­


Aquila in­tro­duced their new­est power cata­ma­ran at the Mi­ami Boat Show this year. The 36 is a de­par­ture from larger Aquila mod­els, as it sports both out­board mo­tors and true in­door/out­door liv­ing space. The new 36 fea­tures three op­tions for out­board power, ex­clu­sively with Mer­cury’s dual 250, 300, or 350 horse en­gines. De­pend­ing on the engine pack­age, you are look­ing at top­ping out be­tween 27 knots and 37 knots.

The 36 fea­tures two cab­ins with sep­a­rate en suite heads, one in each hull. The rest of the boat is set up for out­door liv­ing and en­ter­tain­ment, with a sum­mer kitchen in the cock­pit cov­ered by an op­tional hard­top, which has an op­tional sun­roof. The cock­pit it­self can hold two dozen peo­ple with seat­ing in the cov­ered cock­pit area as well as a lux­u­ri­ous for­ward deck.

With its wide stance, this boat will be at home in open wa­ter or on the hook. The Aquila 36 should make a great small cruiser for warm wa­ters and char­ter con­verts.

More at:


Aero Tec Lab­o­ra­to­ries has re­leased a se­ries of new flex­i­ble potable wa­ter bladders from 25 to 500 gal­lons. When not in use, these tanks can be rolled up for com­pact stor­age. They are built of ny­lon­rein-forced rub­ber and in­clude a rub­ber­ized fab­ric un­der­liner to help pro­tect the flex­i­ble tank from abra­sion and off fla­vors.

There are two dif­fer­ent de­signs of these bladders: The Aqua-Fer (start­ing at $1,012 for a 50-gal­lon blad­der), fea­tures an in­no­va­tive space-sav­ing de­sign in a small foot­print. The more eco­nom­i­cal of the two is the Aqua-Flex (start­ing at $569 for 25-gal­lon ca­pac­ity). Both of these bladders meet or ex­ceed san­i­tary re­quire­ments set by the Na­tional San­i­tary Foun­da­tion and De­fense Depart­ment.

More at:


TrawlerFest will be vis­it­ing Bre­mer­ton, Washington, from May 16-20. This year, TrawlerFest is not just show­ing off a new lo­ca­tion, we’ve added some ex­cit­ing new speak­ers to the sem­i­nar list, as well. Make sure you check out:

Robert Reeder: Many will know Robert from his seamanship col­umns on GPS-free nav­i­ga­tion. Robert will be pre­sent­ing both on “Old School Nav­i­ga­tion” tech­niques as well as weather fore­cast­ing and pre­dict­ing for cruis­ers. Learn the fun­da­men­tals of marine weather, with a spe­cial fo­cus on Sal­ish Sea weather pat­terns and weather rout­ing. Reeder ex­plains how to find and use the best lo­cal weather re­sources from NOAA and En­vi­ron­ment Canada, and cor­re­late these with your on­board ob­ser­va­tions to con­fi­dently plan in­land and coastal pas­sage mak­ing. He will also dis­cuss how to get home when your ship’s GPS fails. Learn these im­por­tant GPS-free skills in this in­te­grated ap­proach that in­cludes sim­ple and in­ex­pen­sive tools, paper charts, elec­tronic charts, and radar.

Matt Mortensen & Chris Brig­noli:

These two will present on the com­ing of age of so­lar and bat­tery tech­nol­ogy. A con­flu­ence of ma­tur­ing tech­nolo­gies could trans­form boat­ing as we know it. Lithi­u­m­iron phos­phate bat­ter­ies and so­lar pan­els can sub­stan­tially re­duce your car­bon foot­print while dra­mat­i­cally im­prov­ing the per­for­mance of your ves­sel. Tak­ing ad­van­tage of what is avail­able, how­ever, re­quires a dif­fer­ent way of think­ing. Sem­i­nar regis­tra­tion at: DzsNtS


Last is­sue we talked about the need for

a diver to keep the bot­tom of your boat clean. Some of you who live where the wa­ter is warm are prob­a­bly brave enough to main­tain your own bot­toms. For those folks, this tool is for you. De­signed specif­i­cally to help you clean any el­e­ment you find un­der wa­ter, this is the equiv­a­lent of a 5-in-1 pain­ters tool (but with one less fea­ture). The curved blade will al­low you to scrape shafts up to 4 inches. The pointed “beak” is per­fect for scrap­ing cool­ing chan­nels, grated


On March 2nd, Ac­tive In­ter­est Me­dia (AIM) an­nounced the sale of Show Man­age­ment to In­forma, the Lon­don-based global busi­ness in­tel­li­gence, aca­demic pub­lish­ing, knowl­edge and events com­pany. With the pur­chase of Show Man­age­ment In­forma be­comes one of the largest pro­duc­ers of yacht and boat shows. Show Man­age­ment is best known for grow­ing, with its part­ners, the Fort Laud­erdale In­ter­na­tional Boat Show, Yachts Mi­ami Beach, and the Palm Beach In­ter­na­tional Boat Show into three of the world’s largest in-wa­ter boat shows, and the St. Petersburg Power & Sail­boat Show and Sun­coast Boat Show in Sara­sota into two of the Florida Gulf Coast’s largest in-wa­ter boat shows.

Sound­ings Trade Only spoke to for­mer Show Man­age­ment CEO Efrem “Skip” Zim­bal­ist III and In­forma global ex­hi­bi­tions di­vi­sion chief ex­ec­u­tive Char­lie McCurdy shortly af­ter the sale was made pub­lic, and were as­sured by both that there would not be big changes to the boat shows that Show Man­age­ment has grown over the past 11 years.

An­drew Clur­man, AIM Pres­i­dent and CEO stated in the an­nounce­ment of the sale of Show Man­age­ment that, “The sale of Show Man­age­ment is part of AIM’s long-term strate­gic plan to ac­cel­er­ate our growth, AIM will rein­vest the pro­ceeds from through-hulls, and cut­lass bear­ings. The rounded-cor­ner putty knife pro­vides the per­fect sort of scraper for get­ting off the hard growth with­out goug­ing through the bot­tom paint and gel coat. So, if you main­tain what lies be­low your own wa­ter­line, al­low this tool to con­trol your own des­tiny, or at least keep the curse words out of your mouth that come from driv­ing the cor­ner of a paint scraper deep into your gel coat.

n $44.99­shelf­ma­ this sale to grow our dig­i­tal video, on­line ed­u­ca­tion, mar­ket­ing ser­vices, and events in our other ver­ti­cals… AIM has just fin­ished our best year ever, and we now have the re­sources to fund many ex­cit­ing op­por­tu­ni­ties. Mean­while, we re­main fully com­mit­ted to the marine in­dus­try with our lead­ing port­fo­lio of print and dig­i­tal brands and their re­lated events, and will part­ner with In­forma to grow the in­dus­try and our re­spec­tive busi­nesses.”

Over­head view of Bre­mer­ton’s up­dated ma­rina fa­cil­i­ties.

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